I'm Already Tracer is a TikTok meme, and the only meme that TMK doesn't like. That alone is the reason why she is the main antagonist of the Hey Batrick comics and universe.
IAT was born to an overwatch player, she litterally spent her whole life playing overwatch, she never went outside.
She goes outside for the very first time, she is now the best player at Overwatch, like, God x10 Tier.
As a villian
In 2018, she discovered tiktok, and became a meme somehow. Later, she discovered she is hated by some people now she somehow wants to kill every meme and future meme to be the best. *cue hey batrick movie*