Are you able to give more context to this? (From his Marvel Fandom page)
“ As Kenji tried desperately to stop her, Martha approaches him, telling him that if it were any consolation she "had no heart for him to break". Using an unspecified psychic attack, Martha destroyed Kenji's (and by extension, her own) body. As he died his mind control seeped out of the residents of Utopia.
Because Kenji's death caused the breakdown of his techno-organic form, Martha now resides in a new holding tank, remaining as a severed brain.”