Coach Feratu

Rick and Morty had a vampire who was sucking blood from victims at Morty and Summer's school and went by the name "Coach Feratu" (real name Balik Alistaine) until he was killed by Tiny Rick, Morty, and Summer. When the vampire leader learns his code name, this exchange happens, which leads to the leader asking if this order makes him a buzzkill or not before sinking his teeth into a woman's neck, deciding it does not.

Example of:
Lazy Alias