Master of the Omnitrix

https://www.webnovel.com/book/master-of-the-omnitrix_15585343205998605

"One of the most powerful beings in all fiction whose only weakness is his mentality and plot. "

....

"OK then ...."

Ben Tennyson. Ben 10. Holder of the Omnitrix. Earth's Greatest Champion. Hero of Heroes . Saviour of the Universe.

I got some big shoes to fill since I am , somehow, in his 5 year old body .

.....

The Universe is doomed... isn't it.