Urman Dictionary

ultima donna

noun phrase

A member of a group whose direct individual contributions to the shared goal may not be significant, but who views their own needs as subservient to the group’s and who improves the group’s cohesion and effectiveness through supportive teamwork. The opposite of a prima donna.

“What’s the new guy’s name? Bran? He’s a real team player.”
“Team player? Heck, he’s an ultima donna. Yesterday when Sara and Carlito were complaining that we were out of Dr Pepper, Bran went out on his lunch break and bought two cases of it. It took his whole break so he had to eat lunch at his desk afterward.”