[@Shadow Dragon]
As far as I'm concerned, there is no problem to be had here. Last time I checked, there was no rule stating that only one character could be made for a respective race. Even if that were the case, demonspawn work differently from tieflings, much so to the point where they can be considered to be different races entirely. As [@Vampiretwilight] has said, we have been discussing my characters and my involvement via PMs, and they have not announced any issue with the characters I have created.