Well, Scizor Prime walls things with Special energy, Shedinja walls things with Poke-powers or Bodies, with Dusknoir SF, his Night Spin attack essentially gives him Mr. Mime's Poke-body. That's all I can think of right now
Spiritomb is kinda like a wall because it locks trainers, but I'm pretty sure that SourMilk named all the good ones.
It's to bad that we lose both Shuckle and Mr.Mime in the next format.
