In her She-Hulk form, Jennifer possesses immense superhuman strength. When she transforms back and forth, she gains/loses considerable mass (much of it muscle).
Unlike her cousin, her personality and intelligence are less affected when she transforms into the She-Hulk, although she
becomes more self-confident and assertive.
As She-Hulk, Walters is exponentially stronger than she is in her Jennifer Walters form. Additionally,
any extra strength gained as Jennifer Walters through intense physical training will be amplified, making her She-Hulk form
even stronger. She used this to her advantage to prepare for a fight with the Champion of the Universe on an alien world (where court cases were decided through boxing matches), and managed to defeat him. While Jennifer Walters' training resulted in her becoming a bit
more toned, She-Hulk's musculature, in contrast, became much more pronounced. As a result, she donned a special strength-controlling
bodysuit to replace her business clothes, which no longer fit her frame. Walters subsequently shed some of that muscle mass
during a work hiatus, but since first becoming She-Hulk, her strength has increased. Although the She-Hulk's strength originally
remained at a set level and did not increase, later in her history her strength increases as her anger grows, similar to her
cousin the Hulk. However, Jennifer's strength does not reach the Hulk's rage-enhanced levels. During the Avengers story arc
"The Search for She-Hulk", it was established that fear also increases her strength. She-Hulk is impervious to high levels
of force, pain, and disease: her skin can withstand extremes of temperature, as well as tremendous stresses and impacts without
puncture wounds or lacerations. Despite this, she has been proven to be highly ticklish, as she was once tickled by the Hulk Robot during a battle between a rag-tag group of villains and the Avengers during the Acts of Vengeance. Her enhanced physiology renders her immune to all terrestrial diseases. She-Hulk also possesses a healing
factor, which enabled her to completely recover, within minutes, from a skewering by the Wendigo.
Thanks to training by the Ovoid alien race, She-Hulk can exchange her physical characteristics and powers with the physical characteristics
and powers of another being by simply focusing on a mental image of the person and willing the transfer to take place. The
actual intent of the Ovoid skill is to exchange the minds of the user and another being, but it was theorized by the
Ovoid who trained the She-Hulk that some factor of her gamma-mutated physiology causes her use of this talent to manifest
in a different way. She rarely uses this power; unless she initiates this exchange with another superhuman being, she will
become basically human in ability, but still green-skinned and generally recognizable as She-Hulk, and thus vulnerable to
attack (a fact that the super-villain Titania took advantage of the one time She-Hulk did use this ability).
She-Hulk's legal practice requires her to spend extended periods of time as Jennifer Walters. The Scarlet Witch cast a spell for her which rendered anyone intending to harm the She-Hulk incapable of recognizing her
as Jennifer Walters. However, the spell actually rendered Jennifer Walters completely undetectable to these individuals. While
this had its advantages, it also left Jennifer unable to communicate with certain people whose knowledge or information it
was vital for her to acquire. The spell was eventually removed by Dr. Stephen Strange, the Sorcerer Supreme of the Marvel Universe.