Pyrox

Dan/Pyrox (not to confuse the LEGO Heroes antagonist) is a teenage quirky competitor who invariably fails on his not so heinous plans. Despite Pyrox being an antagonist, he also seems to have a sad and evil syndrome in him, making him feeling unpleasant in the first place and being apologetic for what abolishing work he had done. It's also confirmed that Pyrox had a former name called Dan when he was the age of 1-13 and he was playing on being an evil villain all along.

Trivia

 * Pyrox shares the same behavior with Papyrus. (being evil in the first place and befriending the player after his battle)