Trish came into the world of the X-Men when she began investigating X-Factor, who at the time were masquerading as mutant hunters. With help from Mystique, she uncovered Angel's financial backing of X-Factor Inc. and broke the story to the public. Later, she reported on X-Factor's victory over Apocalypse, and began to fall in love with Beast. Eventually, the two began a tumultuous relationship.
Trish's ethical duty to search for the truth began to clash with the X-Teams shroud of secrecy, even if both shared a common goal of human-mutant co-existence. Their different ideologies conflicted when Trish reported on Moira MacTaggart becoming the first human infected with the Legacy Virus. Beast saw this as betrayal that resulted in a rise in anti-mutant sentiment, and dumped Trish. The two reconciled after Hank was kidnapped by Dark Beast.
Soon after, Trish joined the X-Men in space in a battle against the Phalanx. Upon returning to Earth, she was also an unwilling participant in the "Trial of Gambit".
After Beast underwent a Secondary Mutation and took on a more feline appearance, Trish ended their relationship fearing ridicule and damage to her reputation, but on M-Day, she pledged Bishop to ask Beast to call her.
