eureka (they/them)
i've been using eureka in games for years and they've picked up so many backstories along the way. they were a thief, a cleric, a warlock, a warrior... they've been an jester, a folk hero, a shark transmorgafied into a humanoid (that's what this picture is lol).
what stays the same, i guess, is that eureka likes to help. they are a character that shows up and, despite being a stranger, is willing to help the party's cause. maybe sometimes to their detriment lol