MARS

he’s always wearing a hoodie, possibly to hide a feminine figure

he has trouble growing a beard even though he’s full-blooded hispanic (hispanic boys tend to get facial hair very early)

his dad is extremely hairy so it woud be in his genetics anyway if he was amab

having a mustache wouldn’t even be proof against him being afab because hispanic girls get hairy too, and he was also shaving his peach fuzz in an attempt to get a beard

It also explains the little strange plothole in ‘Mewberty’ about her reaction to Marco. Think about how, while she was still Mewman enough to focus, her reaction to Marco was mild compared to everyone else, and it took her a second to even consider it and dropped it completely, and while in Mewberty!form she completely and 100% ignored him and focused entirely on all other boys; she tried to smother him rather than capture him, as if he was an obstacle and not something to collect for later.

Putting this in with the other notes added after this reblog, since this one is super duper important.

He is able to infiltrate St. Olga’s as a girl and pass off as a princess perfectly, against guards meant to notice impostors or people trying to escape. (pointed out by lovelylakeswastaken, not me)

He fills out the dress as well, even if it’s poofy, it wouldn’t stay like that.

now keep in mind there only speaking Japanese i don’t know what they are saying, then another guy joins in, so i got a group of three penguin friends

we just waddle around and goof about, the one of them tries to talk to me, but not only do i not have a mic i also don’t speak Japanese, they figure out i don’t speak Japanese and start listing various places, they get the part of being European right, and after listing a lot of places they ask if im from the UK and when i nod they all just start cheering. after hanging out for a while one of them gets real close to me and whispers…