By Toriko standards, Starjun is smoldering (no pun intended)
Character and design wise, he's the antagonist equivalent of Coco (who incidentally is the most popular character of the entire series)
He's has the whole lol"Deep"lol/Cool/redeemable trifecta of shallow shonen fan endearment factors going on
Plus, a Starjun cosplay is waaaaaaaay easier to pull off than a Grinpatch one