Baron Von Steamer

"Greetings, San Fransokyo! It is I, Baron Von Steamer!...I was a pretty well-known villain in my day. No? Steam? Steamer? Nobody remembers? Well, I guess there's not room in your fancy "pocket vest telephones" for history!"

- Steamer introducing himself. "At last, I will exact my revenge by defeating my arch-enemy's little baby child!"

- Steamer

Baron Von Steamer is a minor antagonist in Big Hero 6: The Series. He is a steampunk supervillain and the archenemy of Fred's father; the former superhero Boss Awesome.

He is voiced by Jeff Bennet.

History
In "Fred's Bro-Tillion", Baron Von Steamer crashes the titular party and announces his presence to the entire room, however, he is annoyed to find that nobody knows or remembers who he is. Steamer then states him intentions to kidnap Fred Fredrickson the Fourth, and Fred asks if this means he won't have to dance in response. Steamer begins fighting with Hiro, GoGo and Wasabi in order to get to Fred. During the conflict, Baymax advises him that steam can cause 3rd-degree burns, to which Steamer replies "that is the ambition of the weapon" before blowing Baymax away. Steamer approaches Fred and Wasabi, but, figuring the latter has more resemblance to Boss Awesome, he accidentally kidnaps Wasabi instead and orders the others to tell Boss Awesome he must surrender if he ever wants to see his "precious baby-child" again before escaping.

Fred and his friends then enter Mr. Fredrickson's secret hideout, where he contacts them and learns of his archenemy's return. Mr. Fredrickson states that Steamer had a number of favourite hideouts he could've taken Wasabi to, although Fred notes that all but the old iron works and abandoned subway station have been turned into different Noodle Burgers and one Yacky Taco respectively. Meanwhile, Steamer monologues to Wasabi about how he will take revenge on his enemy by taking away the one thing he treasures most. Wasabi denies being related to Mr. Fredrickson, but Steamer doesn't believe him, and states that he should save his breath, because, if Boss Awesome doesn't show, "it will be his last."

Hiro and Baymax head into Baron Von Steamer's hideout at the abandoned subway station, and after stopping some of his booby-traps, they realize that he is not there. In his hideout, Steamer continues to rant about Boss Awesome while Wasabi tries to use his cellphone to call for help, although this fails. Steamer declares that it is midnight and that Boss Awesome is not there, and prepares to kill Wasabi by dunking him in molten metal. However, GoGo, Honey Lemon and the real Fred save Wasabi, and Steamer escapes. He then boards a mechanical, steam-powered spider (terrifying the arachnophobic Fred) and begins to fight with the heroes, gluing GoGo and Honey Lemon to the ground with one of the former's own chem-balls and pinning Baymax with one of the spider's legs.

Deciding to confront his fears, Fred reveals himself as Boss Awesome's real son and engages Steamer, using the dancing techniques he learned from Baymax to avoid his attacks while melting his legs with his fire breath. Steamer is gradually overwhelmed and his mech is destroyed, and he swears to get revenge on Fred before escaping. Afterwards, Steamer's technology is used to make Hiro's Aunt Cass a new coffee maker.

Trivia

 * Steamer's exact age is unknown, although Mr. Fredrickson mentions that "he was old back in the day."
 * He also mentions to Wasabi how he and Boss Awesome had clashed for half a century, confirming that he is at least over fifty.
 * It is unclear if Steamer is a cyborg, or if all his mechanical modifications are just part of his costume.