Kachaan
Sparky Sparky Boom Boom Man is called Kachaan because Broccoli boi can’t remember Katsuki’s name and it’s annoying
Broccoli boi: 'Kachaan? That’s not even close to Katsuki!'
Broccoli boi yells at Deku: 'Why is Kachaan even a thing?'
Broccoli boi texts me: 'Kachaan is the dumbest name ever.'