JabJub
A JabJub is someone who thinks they're the boss of the whole project. They send angry messages and expect instant answers, no matter how late it is or how many people are sleeping.
"It’s 2 a. m. and I’m not done yet!", @JabJubBoss
"You didn’t reply to my 10th tweet? I’m gonna burn your token!", @JabJubAngry
"I’m gonna take over this project if I have to!", @JabJubTakeover