Ignacius Baumann

Ignacius Baumann is a human shopkeeper that owns an alien grocery store on Earth, having known Ben Tennyson since he was five years old and been a victim of the kid's actions indirectly damaging his store which intensified since he gained Omnitrix. Baumann is formally introduced in the Ultimate Alien episode "The Purge" when Ben and his team wanted to ask about the Forever Knights at the time when the Forever Knights have been hunting aliens on Earth.

Baumann reappears in the Ben 10: Omniverse episode "The More Things Change" Pt. 1. When Ben comes to the store to defend it against Bubble Helmet, Fistina, and Liam (who were working for Psyphon in his racketeer activity), Baumann begs him to leave but ends up despairing from the resulting fight. In "Special Delivery," Ben's fight with Thunderpig ends up wrecking Baumann's car. Baumann has Ben perform deliveries to him without the involvement of the Omnitrix. When Ben manages to finish his deliveries, Baumann gets his car fixed but is mortified after seeing his house destroyed by a food delivery truck that Ben knocked out of Earth as Way Big a year ago returning from orbit.

In "The Frogs of War" Pt. 2, Baumann allows Gwen, Kevin, Blukic, and Argit to use one of the hidden rooms in his store to make a plan to stop the Incurseans.