Since there are over 400 Pokemon in existence, there should be a language including the first 256 in the National Dex.
Here's a (kinda broken right now) hello world:
Trainer HELLOWORLD wants to battle! Go! NIDORINO! Go! VOLTORB! Go! LICKITUNG! Go! TANGELA! Go! RHYHORN! Go! SEAKING! Go! NIDORAN(male)! Go! RHYHORN! Go! LICKITUNG! Go! LICKITUNG! Go! ELECTRODE! Go! TENTACOOL! ((phrase to get a unicode string from stack)) ((phrase to print)) Player beat Trainer HELLOWORLD!
If someone can help me on this, I'd really appreciate it.