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Doctor Surgeo, commonly known just as Surgeo, is a brick-built character Mixel character from set (polybag) 41569 Surgeo released in 2016, part of the Series 8.
Surgeo is mostly white in color. His head is mainly a tall, mint colored rectangular shape. It has two horns on his head, a grey head mirror on the middle, two eyes on each side with a mint rim surrounding them, and 3 white spikes of some sort on the top. He has five sharp teeth; three on the top, two on the bottom. His body is azure with a large white stripe running down the middle. His jaw is mainly white with an azure pattern on the top with a cabinet-like pattern on his body. His left arm is grey with a white accent at the top holding a black hammer, while his right arm is entirely grey and resembles a syringe. He has short, bowed legs with grey feet, with a white pattern on the bottom and a single mint toe on each foot.
- He is the leader of the Medix.
- His syringe arm has a clear part near the top in LEGO, but in animated form, it is gray.
- His LEGO set instructions show that he can flip his top jaw upside down, to make another face. This transforms his horns into a moustache. This ability is not seen in Nixel, Nixel, Go Away, though.
- His feet are similar to Krog's, but with different colored toes.
- At the 2016 New York Toy Fair, his horns and mirror on his head were missing.
- Save for the opening sequence, he is missing his syringe arm in Nixel, Nixel, Go Away; instead sporting a regular arm. This is similar to Camillot's lack of an axe arm in Every Knight Has Its Day.
- He is named in the credits of Nixel, Nixel, Go Away as "Dr. Surgeo."