>>42975184Some pokemon have recycled walk, dash and idle animations. Been that way since Gates to Infinity.
However, Serperior was the only serpentine pokemon in Gates, so it's animations were tailor made for it.
Super, and now DX, recycled them for a few other serpentine pokemon. Not all of them have it, Seviper for example has its usual accordion stance and movement, but others like Dratini and Dragonair are posed like Serperior.