Ace and Deuce’s roommates (including each other)
Epel’s roommates
Jack and Ortho’s roommates
It is mentioned by multiple characters that first-year students are four people in a room at NRC, but if there is a fourth person in Sebek’s room they seem elusive, maybe never appearing or being mentioned as of this writing.
Ruggie’s roommate, Jade and Floyd (2nd-year students are two people to a room)
Jamil’s roommate, Silver’s roommate
Twisted Wonderland Reference Note 