@KatherinWinterMost of the primordial beings tend to stick to themselves unfortunally, like Gaia pretty much sleeps all the time after trying to overthrow the gods once, Tartarus just stays in his pit, and etc.. though could probably find ways to have one or two show up at times.
Most of the titans tend to not play well, not to mention most are being imprisoned/trapped (could make this a 'punishment' for them if they apear lol) while the few free usually live in hiding. Prometheus is one of the few that do play well.
I do agree there, From Odin being king of the Norse mythology gods, which all like combat wouldn't be surprised if some actually try to cause trouble lol. Though Odin is to wise for that.
I primarily only know of Greek/Roman, Egyptian, and Norse mythologies. so can't try to help any of the other mythology type gods/goddess.
Egyptian's Thoth might be good for a type of history class or something lol. his a god of knowledge.