Quote:

Disco Steve said:
No, how Etrigan was reverted into a little baby when the Morgan Le Fay's son took over and got rid of the adults.


I've always figured Etrigan, as a demon, is impervious to dark magic. It's the only explanation of why Morgan didn't get rid of him a long time ago.

I'm clueless as to why he changed to a baby, though. I missed the part of the episode where he actually showed up.