Tbh, I don't think Beta's scum. I think he has a false conclusion, but I have no reason to label him as suspicious. I'd be more likely to trust you if you helped push Reborn. Especially because, IIRC, you defended Reborn a little a couple pages back. That'd clear up a lot in terms of your alignment (when) if Reborn flips.
Now that is something.
That means Rela is Jester.