Im still surprised how well written Gliscor was. It started off as the runt of its pack and it slowly learned to overcome its weaknesses. The fact Ash actually denied it the razor fang and going "Yeah you aren't taking the easy way to getting stronger" until Gligar was over its fears was pretty kino.
Plus the fact that Gliscor didnt lose its personality upon evolving (like Staraptor and Torterra) was amazing.