Ego

Short form for the word "egocentric", meaning "self-centered".

Basically selfish, focus on him/herself rather than the benefits of whole community.

Thought that he/she is the most talented and on top of everyone.

A: Yo, look at this IT Manager. He's so Ego that even marked himself as the most talented.

B: Fuck it. He only knows how to send emails to order his teammates and play politics.

A: Wait, does he belong to the team? He didn't offer help to his teammates.

B. Ahhh, dammit.