is an old shop keeper who lives in Bellwood.
|Powers and abilities|
|Voice Actor||Corey Burton (Omniverse)|
|First Appearance||Ultimate Alien|
In Omniverse, Mr. Baumann wears glasses, a red bow-tie and a pink-striped yellow shirt with red overalls and brown pants. He also has grown a little black mustache.
He has an irrational hatred of Ben for any damage to his property or car that was never intentional. He is shown to have a cold, unforgiving and impatient demeanor towards Ben. He is generally unreasonable, as shown in Special Delivery, when he punishes Ben for another accidental destruction of his car that was the result of an unprovoked alien attack.
Ben 10: Omniverse
- The More Things Change: Part 1 (First reappearance)
- Malefactor ( cameo; dream only)
- Special Delivery
- Mr. Baumann is Ben's neighbor since he was five.