Welcome back Luna. Good to see you're still alive.
As for ingame:
Porto is violent and will kill you if you don't befriend him fast. He was Saintish Ninja from ye olden days.
Vampiro/Darksilence/Shadow Glitch/Hellboy Nat still plays. He's promised to stop going crazy so we'll see how that turns out.
Lub is Porto's bestest friend in the whole wide world, but he's mostly afk.
Will Miles/--storage--/--qwerty-- can be annoying, and is a notorious script kiddie. He won't bother you much, though.
Herb/Curse is dangerous but spends a lot more time scripting and less hunting random people for fun. He's known to do both, though.
I still own the Nurse Tuna account.
Buck is an okay guy if you get to know him. He stole about a dozen arrests from me beforehand though. His current goal is to get 100 of every dye.
Bellyflop is awesome. Next.
Natalie is Belly's younger sister and can't be trusted to not confuse you.
Sara-Elizabeth is Buck's friend, but she doesn't do much.
That's about it.