Nico really likes tea, he knows many different flavors and flavor names and has tried most if not all of them
Nico knows a lot of languages the main ones being of course English and Italian but also Korean, Swedish, Ancient Greek, Modern Greek, Irish, Scottish Gaelic, Welsh, Japanese, ect.
Nico is really tired a lot of the time but doesn't sleep
Nico mostly doesn't like physical contact with people he doesn't know but if he is really attached to them he will allow hugs, hand holding, ect.
After Beckendorf died Nico started taking care of Mrs. O'Leary but had to give that responsibility up to someone else temporarily while he was at camp jupiter
Nico likes spiders, perticularly venomous ones
Nico and Selina were friends when she was alive, they weren't super close but they were friends which was how he realized what he was feeling for Percy was actually love rather than just thinking of him as a really really good friend
Aphrodite has lunch with Nico quite regularly, it first started as her trying to make him feel better about his sexuality but then they became genuine friends.
Nico is able to store inanimate items in the shadows and remove them from the shadows at any point in time
Persephone started out disliking Nico but after spending more time with him quickly started liking him (as most of the gods do when it comes to Nico)
Nico likes talking to the dryads and when he first tried to talk to them they hid away but after a while of giving their plants some nice princess treatment he started to grow on them (pun intended)
Almost all the gods (except for Zeus) are friends or friendly when it comes to Nico
Nico likes cats, more specifically black cats
When more than 4 crows are near Nico they start to fly in a circle
When Nico feels any extreme emption he switches to Italian
Nico likes feeling warm and Will is more than happy to be his personal heater
(P.S. all of these will show up in my fanfic)
