User blog comment:Brandon 10/Ask Brandon 10/@comment-7503158-20131229042511/@comment-3441048-20131229051555

Currently in AF, Brandon can turn into 29/30 aliens... I think. In the Original Series, It's about 30 aliens. So if Brandon was able to transform into all of his avaible aliens, it would probably be 50 aliens. But if you mean every single alien in the Omnitrix, probably 10,000.