Obnoxatron
a person who is so annoying, they might as well be a robot truck. they make everything worse and think they're the best at it.
My brother is an Obnoxatron. He turned into a robot and tried to take over my video game. I beat him, but it was a mess.
That Obnoxatron in the park was yelling at a pigeon. The pigeon flew away and said nothing.
I saw an Obnoxatron drive through my neighbor's yard. He screamed, 'I'm the best!' and then left a mess.