Both are in the castle area :
Velkators Experiment Lena ..-21, 251 , 4 ,,, this toon is found in the castle, past the throne room there are stairs that lead to a door , beyond that door are 4 mobs and stairs up to 2 more mobs .. this mob was found on the lower lvl in that room with the 4 … he popped 2 times there for me …
Failed Experiment Izah : :69, 169, 4..This toon popped outside the castle … passing the icepaw camp go threw the tunnel to the castle ...run around the castle to the other side .. you well see 3 Crystal Sentinels standing against a clear ice wall … his place holder is one of them ...