Xavier

Stop your fighting! Do not allow yourselves to come to blows on each other's faces! Resolve this method cordially, not morbid-ially. Let the hot release, of this huge peace, satisfy your conflict. Xavier is a bizarre creature who encountered the Dong Squad and League of Super Critics on Sojourn V.

History
In Chapter 14 of The Mazkertis Paradox, Xavier approached the Dong Squad and the League of Super Critics on Sojourn V. Just as the two teams were about to come to blows, Xavier shouted an echoing "No!" at them, which caused them to focus their attention on him instead. Upon viewing Xavier, everyone present felt an overwhelming sensation of unexplained rage and disgust. Xavier pleaded with them to stop their fighting, but before he could explain himself, the gangsters beating up 18-LA decided to attack Xavier instead, bodyslamming him and telling him to "taste the pain!". Xavier quickly recovered, however, and muttered to himself that it was his destiny to save the Dongers and the Critics.

Linkara realized that the quickest way of getting rid of Xavier was probably to play along, so they agreed not to violate the NAP until he left.

Trivia

 * Xavier originates from the cult Adult Swim series Xavier: Renegade Angel.