Replying...
Intro. Cross is a short skeleton monster, with white irises/eye lights. He is shown to have multiple outfits throughout XTale; however his most iconic one is his oversized uniform that he absolutely hates[1]. Throughout the majority of season one Underverse, from 0.0 to 0.6, his outfit consisted of a black turtleneck sweater and a white hoodie with a fluffy hood and short sleeves. The uniform also had a black and white cape sewed onto the hoodie, as well as X-shaped belts(?) crossing over the chest. He wore black shorts, marked with giant X's on both legs, held by a white belt at his waist with a X on it, and a pair of white shoes, also marked with an X. The uniform really matched the namesake of his AU.

Cross Sans

@Astra