As the Red She-Hulk, Sonja has enormous superhuman strength, speed, stamina, and durability, and a healing factor that allows her to easily survive what would normally be fatal injuries to humans, such as stab wounds to the leg and abdomen by Wolverine's claws. Similar to her fellow hulks, Sonja's strength level is so vast that it warps the laws of physics even further than standard for other characters in the same fictional continuity, for example allowing her to punch her way through dimensional barriers between different universes. She shares the Red Hulk's ability to absorb energy, such as the gamma radiation from other Hulks, thereby reverting those beings to human form, and at least temporarily boosting herself. Also like her fellow Red Hulks. Red She-Hulk has yellow blood, produces yellow energy from her eyes when angry,and can discharge energy by touch. At some point the Extremis Virus caused a mutation to her hulk form. Her black hair became red and her eyes produced red energy when enraged and her blood was a mix of yellow and red. Red She-Hulk can return to her human form and can revert to her Hulk form at will. As Red She-Hulk, she still maintains control of her humanity, though if extremely angered she can become "pure Hulk", further increasing her strength but losing control of her mind.
Red She-Hulk carries a great sword that she affectionately calls her "big ass sword". The sword, forged by Tony Stark, is made of Stark Industries repulsor technology and enchanted uru metal from Asgard and was first given to Red She-Hulk during the the battle of the War Hulk. When Hulk and his offspring had declared war on the world for all the wrongs that was done to him.
Superhuman Strength: As Red She-Hulk, she is proportionally stronger than her human form. This means that any extra strength gains as Sonja Serrano through intense physical training will be amplified, making her Red She-Hulk form that much stronger. Red She-Hulk's strength is comparable to that of the Red Hulk.
Superhuman Speed: Due, at least partially, to the great muscular strength and development of her leg muscles, she is capable of running and moving at speeds that are beyond the natural physical limits of the finest human athlete.
Superhuman Stamina: Red She-Hulk's highly advanced musculature produces considerably less fatigue toxins during physical activity than the musculature of an ordinary human. She can exert herself at peak capacity for about 48 hours before fatigue begins to impair her performance.
Superhuman Durability: Red She-Hulk's body is highly resistant to all forms of conventional injury. Her skin is capable of withstanding extreme pressures, temperatures, falls from great heights, field-artillery canon shells, and powerful energy blasts without sustaining any injury.
Superhuman Agility: Red She-Hulk's agility, balance and bodily coordination are enhanced to levels that are beyond the natural physical limits of the finest human athlete.
Regenerative Healing Factor: Despite her body's extremely high resistance to injury, it is possible to injure her. However, she is capable of rapidly regenerating injuries that result in great tissue damage and blood loss within a matter of minutes. However, she is not capable of regenerating missing limbs or organs. Red She-Hulk's highly efficient metabolism renders her immune to all drugs and toxins as well as total immunity to all known Earthly diseases.
Energy absorption and discharges: Red She-Hulk is able to absorb energy, such as radiation and power cosmic, to increase her power level, and can discharge energy by touch.
Mutant Powers :: Fire & Lightning - Pyrokinesis - She can create, manipulate, and control Fire & Heat.
Electrokinesis/ Electromagnetism- can create and manipulate lightning/ electricity, electric currents, earth’s magnetic fields, magnetism, control metal, electronic devices, turn oneself into electricity and move through power lines, enter electrical sockets, control and hide within any device with an electrical charge, interface with technology and control it.
Pyrokinesis is the ability to excite the atoms within an object, possibly enough energy to ignite the object. A pyrokinetic is a person capable of generating flames from thin air, not requiring the consumption of oxygen or combustible objects to maintain the flames. They have been seen being able to increase the temperature in their proximity, create flames, and endure extreme heat and flame without being harmed.
- Blazing Bolts: The ability to project blazing bolts, destructive, incinerating long-range beams of fire from any part of one's body at will (They could be able to blow reinforced, solid titanium walls without effort).
- Burning: The ability to burn, scald, singe, scorch, vaporize, evaporate, and incinerate virtually any being or object by touch.
- Fire Absorption: The character can absorb any amount of flame into his/her body harmlessly.
- Fire Breath: A character can project his/her fire from his/her mouth by breathing and exhaling at will, like a dragon.
- Fire Extinguishing: The character can extinguish any fire in his vicinity mentally.
- Fire Projectiles: The ability to make constructs out of flame (fireballs being the most common) and hurl them at opponents. Also includes shooting a steady stream of fire from the hands.
- Fiery Projections: The ability to generate, project, and create virtually any shapes, objects, constructs, weapons, and even beings composed of fire from any point on one's body.
- Firestorm: The ability to summon a firestorm that can cover great distances, from an acre to over a fifty thousand-mile radius.
- Flight: A character's body and plasma could possess a high hydrogen content, and could be surrounded by an exuded cloud of mono-atomic hydrogen atoms. This hot cloud could provides sufficient positive buoyancy for him/her to float. With mental stimulation of his/her flame, he/she could provide enough lift to carry an undetermined amount of weight that could be greater than one could normally carry. By forming a jet from his/her feet, directed behind him/her, one could achieve supersonic speeds of up to at least 300 miles per hour.
- Pyrokinesis: The ability to telekinetically control and manipulate any fire or flame, even ones one did not manufacture, and utilize them in any way imaginable. One could possess complete and precise control over their shape, size, intensity, density, temperature, and even color. He/she could alter its size and intensity from a mere candlestick flame, to an immeasurable inferno. He/she could telekinetically manipulate any fire or flame to do whatever he/she desires.
- Spontaneous Combustion: The ability to spontaneously combust and/or engulf any portion of or all of oneself in fiery plasma without harm to oneself whatsoever.
- Welding and Fusing: One can control his flame to perform the most delicate welding jobs. He/she can fuse craters, holes, or openings in walls, floors, ceilings, or the ground.
Electrokinesis is the ability to manipulate electricity. User can create, shape and manipulate electricity, a form of energy resulting from the existence of charged particles (such as electrons or protons) which give the user control over electric fields, electric charges, electric currents, electronics, and electromagnetism.
She was infected with three different viral strains of Extremis. Once in the womb, one through her teen years after her mutant oowers first manifested, and after she was turned into a Red Hulk.
The original Extremis serum gives its user:
- Superhuman Strength: An Extremis subject's strength can be increased to superhuman levels, providing the user enough strength to toss cars and people with relative ease, break someone's skull with a single punch, counter Iron Man's superhuman physical blows, break Iron Man's bones with ease through the suit, rip the highly durable suit apart without effort, and even use the "blade" of a bulldozer as a blunt force object.
- Superhuman Speed: An Extremis subject can move and run at incredible speeds up to 300mph,although it is unknown if this is the top speed an Extremis subject can move at.
- Superhuman Stamina: The virus grants its user almost unlimited stamina, with no need to eat, drink or breathe air.
- Superhuman Durability: Extremis-enhanced beings have greater resistance to physical injury than an ordinary human. They are able to withstand bullet impacts and direct fire of Repulsor Blasts without feeling pain, at a potency higher than which a Repulsor Blast needs to have to cut through metal, only suffering minor wounds.Iron Man's uni-beam only caused Mallen great discomfort without injury.
- Fire-Breathing: At the user's discretion, his/her lungs fill with fire plasma which he/she can exhale through his/her mouth. Mallen torched a lobby full of people through this method.
- Claw-like pincers: An Extremis subject can unsheathe stings from his/her fingertips. They are very durable, and in conjunction with super-strength, they can be used by the Extremis subject to claw through a converter box.
- Electrical discharge: Extremis-enhanced beings are able to discharge extremely powerful electrical currents through his/her hands which seemed to emanate from his chest through his arms.
- Healing Factor: Extremis-enhanced beings can also heal wounds at a incredible speed, in a matter of hours.
After his moral inversion, Tony Stark created a new Extremis called "Extremis 3.0" that grants the following abilities:
- Appearance Alteration: it allows people to have a form of shape-shifting, as they can alter their appearance to their own desires.
- Regenerative Healing Factor: Tony Stark claimed the virus allows people to heal at an accelerated rate and heal from injuries that they normally couldn't heal from. There is some truth to this as the Extremis was able to heal Daredevil of his blindness.
- Enhanced Strength
- Enhanced Agility
- Enhanced Reflexes
Extremis, when injected into living tissue, results in a wide range of effects within the host organism. The intention of Extremis was to enhance, although the compound was flawed. In all hosts, it causes intense pain until it either bonds with the host successfully, or destroys the host in a violent explosion. Even in cases where the Extremis virus has successfully bonded, the host organism may be at risk of the compound becoming unstable and detonating with sufficient force to burn nearby bystanders to dust, and crater solid concrete underfoot.
- Healing Factor: The Extremis virus imparts incredible restorative capabilities upon the host organism, which was its primary original intention. Superficial wounds close over and heal completely in a matter of seconds, and severed limbs can take minutes to regrow.
- Exothermic Manipulation: Hosts of the Extremis virus are able to consciously raise the temperature of parts of their bodies. The effect can be controlled to the extent that it might only scorch skin, or increased to the point where it can cause steel to turn into a molten state. In the case of Killian intense temperature extremes enables its host to breath fire.
- Superhuman Strength: The Extremis virus enhances the muscular power of the host considerably. The extent appears to vary within marginal limits, but most have demonstrated the ability to hoist the weight of a human male effortlessly in one hand and hurl such a weight across a room.
- Enhanced Agility: The Extremis virus enhances musculature to become more powerful in its motion, granting the host marginally-enhanced agility.