canonically i think he never cooked, he liked to eat sushi (spicy crab roll sushi at a specific place IN japan, isn't he a fancy darling), he also liked to eat chips (ruffles and stuff, like cosmos)
he liked a lot of videogames, he usually liked action and kinda sci-fi, (god of war, dead by daylight, etc), but he was chill with games like Minecraft OR POKรMON he loved Pokรฉmon AND AVATAR (the show, not the blue people movies ahdjsh)
he knew a lot about guns! a nerd of them if you may, he was able to tell information about them from a store they went to lmao
he liked sweets/candies too, at first he was convinced he didn't, but then he spent time with cosmos and got to like them
he likes dogs more than cats
he as old moon, liked sea creatures, that shrimp in sun's cult of the lamb cult, is HIM, not old moon
he liked to make inventions and pranks, inventions to prank too(?) he got good at science in a short time, he's a quick-learner
he didn't like Kingdom Hearts xD, not much at leasts
he shared the fear of mannequins, weeping angels and puppets with old moon, really hated them (but also he seemed to hate way too creepy stuff in general, like frank's face Dx)
OH he HAAATED actually scary games, not mascot horror, CREEPY games, hated them, a thing to notice about him and old moon is that (and this is looking at reed who projected too much onto them) old moon probably held back some screams during horror games, you know, cause he was supposed to not fear things if he was evil and creepy himself xD
but new moon YELLED or showed himself scared a bunch of times, i loved that
idk if hobbies, boy was always working but i could ask my dear friends with better memory
mannerisms, he used to struggle expressing himself in words LMAO, like he used to make this funny noises "D-AAUHHH,,, UHHHH,,," "BABABBABABAPBAP" or that usual "i-dunno" noise he and cosmos and moon make JQKDJJD when he was body acted by reed himself he would make funny gestures with his hands, a lot of shrugs when sun asked him about something he actually didn't know how to answer
he tried learning magic but we never got to see what happened with that (? im sure he didn't try anymore HAKDHA but yeah he met golden freddy and said his quote "magic, gimmie gimmie" "magic, teachy teachy"
AND extra info from livestreams, IT IS CANON
this was asked as to what dish would represent a character, but i think reed took it as "what's their favorite dish" so apparently bro is represented AND likes black current berries !
he also mentioned that Nexus didn't have time to figure out his sexual/romantic orientation but he was probably "bi-curious" (to me that term is usually an excuse so i just go with my boy being bisexual LMAO)
AAAA HERE YOU GO A POST WITH STUFF ABOUT NEXUS THAT I MADE AND SOME PEOPLE REBLOGGED AS WELL