I have a random head canon (Thanks to Bukkunkun) that Zacharie wears/puts on Black lipstick and other make up before putting on his mask. Why does he do it? Because he can. And he’s a little shit who loves to fuck with people and make others think there is something seriously wrong with him when they see the smudged black on him
Plus he likes to kiss Batter and leave a mark on him, and that particular kind of lipstick is a bitch to get off skin/clothes and Batter is always scrubbing at his skin trying to get the lip imprints off of him and save some dignity (but he always fails)