Board Thread:Questions and Answers/@comment-5148639-20140104052433/@comment-26010249-20141222160643

There is a "worst" alien in the omnitrix, right now it might be a walkatrout but something worse might come out.

Azmuth did not make the omnitrix as a weapon after all. He made the very first omnitrix so that the user will be able to understand other species by being the same as those species. It also contained the function to be used as an "Ark" to rescue species whose DNA was corrupted.

Since Azmuth put over a million DNA in the omnitrix, it could be considered a weapon by using Aliens with strong abilities. But not all of those Alien are meant for fighting. So yeah, there is a worst alien in the omnitrix, when it comes to abilities.