However, he went after the Jerk Jock first because he used to tease him.
He then ignored this feeling and gives the Jerk Jock the punishment he deserves.
The entire universe laughs at Emmitt; he dyes his hair black and puts on a fake mustache and the laughter instantly turns to fear.
Alternatively Emmitt is a comedian.
Zig Zagged: Emperor Evulz goes after a former Jerk Jock, then later claims it was because he had a part his "Machine O' Doom" needed. But he didn't necessarily need to attack him first. However, his next few victims didn't tease him...but the last one did.
Averted: Emperor Evulz' life of evil isn't caused by teasing.
Enforced: "It's not like the fangirls need an excuse, but still; why don't we give the bad guy a sympathetic backstory? We could have his life of evil be caused by relentless teasing."
Lampshaded: "Let me guess. You were bullied in high school, so you decided to become a bad guy."
The local Jerk Jock quarterback is really a Straw Nihilist who hates existence itself; so he teases the already-unstable Emmitt Everson in hopes that this trope will occur.