Well, I wasn't too fond of Ichty and Dill, but I guess it was partly because of their song which I really didn't like at all. The basic concept of two villains disliking each other is somewhat common, but in this case the two villains depend on each other making matters more interesting. I think that Cera, Littlefoot, and Spike would be very capable of dealing with Ichty. What in case they grabbed Ichty when being attacked by him and Dill and made sure that he isn't giving any instructions to Dill anymore (Ducky clasping his beak shut or something along the lines). This would be a in interesting situation. They wouldn't want to take Ichty along, but they couldn't let him go either as he would direct Dill straight to them...