Unfezent, the monkey trio, and Serperior were ALL disappointing (ESPECIALLY Serperior). However Unfezent wasn't all that bad for me untill I realized that he is going cause more harm than good for the E4 and the rest of the main story. As soon as I got a Braviary after the main story (I was too lazy to level up Rufflet) I dumped it. As for the monkeys they were used for the 1st gym leader the were never seen again. I at least expected Serperior to have at least SOME potential but he ended up worse than I thought. His movepool is terrible, his stats are bad, and I ended up using other pokemon to help him when things get too tough for him, even when the opponent's pokemon are weak to him.
NNID:RainbowKirby (StarKirby) 3DS Friend Code:1349-4661-3134 AC:New Leaf Dream Suite:4500-2347-0072