Spencer is a ghost. (And if he were actually writing his own backstory, that would be the only sentence in it). He died in 1968, after running away from home because his military parents signed him up for boot camp without asking. He was sleeping in the old gym to avoid a thunderstorm and woke up to it being on fire. No one knew he was in there, so his bones are still buried underneath the new gym, and he’s been bound to the school since then.
He is always wearing a hoodie, and so no one really knows what he looks like. A depressive loner who hangs out on the roof a lot, he hardly ever bothers to attend class and has as little respect for other people as is possible for a terrible teenager (who is almost fifty years old).
I also voice Lucifieri, and I sometimes scare myself how awful he is.