OMG I totally forgot Xerc's birthday is this month too. I'm terrible to my kids. I'm sure he'll celebrate in his own way before long.
Anyway maybe there's spider Xerc's runnin around? I can imagine him aggressively pursuing Al-Cid to cause problems with main Xerc's relationship, though Isa is too nice and probably wouldn't be bothered and it would just piss X2 off. Dona would probably just find it humorous because she's more of an evil clone than one of her would ever be.