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Bigweld is the overarching protagonist of Blue Sky’s second animated film Robots. He is the head of Bigweld Industries and owns a television show called "The Bigweld Show". His main body resembles an enormous titanium sphere with a tuxedo-like cover. He is the founder of Bigweld Industries, a company devoted to making the lives of robots better. He Becomes An Uncle That He Has a Love Interest Named Aunt Fanny For a Girlfriend For A Gift And His Name Changed To Uncle Bigweld

He was voiced by Mel Brooks.

Physical Appearance

Bigweld is a large, shiny robot with brown eyes. He has a round, spherical body with a small head on top, and two large arms. He also sports a metal, tuxedo-like covering which hides the upper half of his body. His lower half is plain and does not have legs; he gets around simply by rolling.


Bigweld is the head of Bigweld Industries before Ratchet takes over. Bigweld becomes the leader once again after Ratchet's downfall. His two catchphrases are "See a need, fill a need" and "You can shine, no matter what you're made of". He believes that any robot can come up with good ideas, and keeps his factory doors open for aspiring young inventors (such as Rodney Copperbottom, who idolizes him) to show him those ideas. In his television show, Bigweld shows the viewers around Bigweld Industries and explains how the inventing process works. He also encourages robots everywhere to believe in themselves. Bigweld's show inspires Rodney to invent the Wonderbot and go to Robot City. Bigweld is also an inventor himself, and spends his spare time setting up elaborate systems of dominoes. When triggered, these dominoes are frequently shown turning switches, activating machinery, and forming designs.

However, after Ratchet took over Bigweld Industries, Bigweld went into hiding in his mansion, leaving many robots to believe he was gone. When Rodney and Cappy finally found him, he urged Rodney to give up and go home. Bigweld had lost his fighting spirit, and become a cranky old hermit whose only interest was playing with dominoes.

Bigweld later changed his mind, and joined Rodney, Cappy, and The Rusties in fighting back against Ratchet's evil plan. During this time, he seems to return Aunt Fanny's feelings. After Ratchet and Madame Gasket were overthrown, he returned Bigweld Industries to its former glory. He was also extremely grateful to Rodney, and in addition to supplying his father with enough spare parts to keep him alive and well, decides to make Rodney his eventual successor as head of Bigweld industries.


  • Tom Hanks, Danny DeVito, Albert Brooks, Bill Murray, Laurence Fishburne, John Goodman, James Marsden, Justin Long, Jack Black, Jason Lee, Jim Carrey, Steve Carell, Nathan Lane, Tom Kenny, Rob Paulsen, Jim Cummings, Kelsey Grammer, the late Ned Beatty, Robert de Niro, Bill Nighy, Christopher Walken and Robert Redford were all considered for the role of Mr. Bigweld before Mel Brooks was cast.
  • This is Mel Brooks's first time voice acting in a theatrically released film. Later he'd go onto voice Albert Einstein in Mr. Peabody & Sherman (2014), Vlad the Elderly Vampire in the Hotel Transylvania films, and Melephant Brooks the Toy Elephant in Toy Story 4 (2019).
  • He is the Robots counterpart of Mrs. Puff from SpongeBob.
    • Despite this, Mrs. Puff is a female while Bigweld is a male.