Team Venture composes the central characters in the show; they live in a fortified compound in an undisclosed location somewhere in the United States. The compound doubles as the headquarters for Dr. Venture’s company, Venture Industries.
Henry Allen “Hank” Venture (voiced by Christopher McCulloch): A teenage boy, one-half of the eponymous pairing. Hank is a combination of Joe Hardy, Jonny Quest and Fred Jones of Scooby Doo fame. He tends to be more athletic and better at disguises than his brother. He is also shown as more outgoing and less wimpy (but less intelligent) than his brother. He is always up for adventures and solving mysteries, but can be rather naïve, and his impulsiveness frequently gets him into trouble.
Dean Venture (voiced by Michael Sinterniklaas): A teenage boy, the second half of the eponymous pairing. Dean is timid, selfless, and more “bookish” than Hank. He is a combination of Frank Hardy, Peter Parker (in fact, he wears Spider-Man pajamas in several episodes) and a stereotypical boy from the 1950s (e.g. Henry Huggins, Buddy Holly). He has an obvious crush on Triana Orpheus.
Dr. Thaddeus S. “Rusty” Venture (voiced by James Urbaniak): Father of the Venture twins. A diet pill addict, he constantly lives in the shadow of his famous father Dr. Jonas Venture, from whom he inherited Venture Industries. There is some question as to his actual degree of ability in the nebulously defined field of “super-science”. While Dr. Venture desperately wishes to emerge from his father’s shadow, ultimately his knack for cutting corners proves his undoing, with his shoddy attempts at genuine technological innovation typically resulting in utter debacle (serving as the premise for several episodes). The doctor seems to dislike his sons (especially Hank); it is somewhat unclear whether he actually cares for them at all. However, he keeps cloning them and has not tried to cash in on the process, which suggests more than scientific curiosity. His childhood time with the original team Venture has had an undeniably traumatizing effect on him, and he still wakes up at night with nightmares of his worst adventures. Given that he takes pills to manage his erratic psyche, hallucinations and stress he may suffer from a form of post traumatic stress disorder.
Brock Samson (voiced by Patrick Warburton): Though not related to the Ventures per se, Brock is the bodyguard of the Venture family and an agent with the Office of Secret Intelligence. As a “Super Secret Agent,” he has a license to kill and an amazing zeal to use it. His background has been revealed to be “half Swedish, quarter Polish, quarter Winnebago“. Though Brock usually displays a relaxed and casual attitude, his temper can cause him to snap into psychotic violence at the slightest provocation. His ability to dispense punishment is equaled by his ability to sustain it, to the point that he is seemingly unkillable. He also has a superhuman sexual appetite, with conquests ranging from beauty queens to sleazy strippers to “the Queen of the Ant People.” He is extremely loyal to the Venture family, actually living with them in the compound, and now seems to serve as a bit of a mentor for the boys, with whom he shares an avuncular relationship.
Sergeant Hatred (voiced by Brendon Small in season 2 and Christopher McCullogh in seasons 3 and 4): Dr Venture’s new arch-nemesis after The Monarch’s forced leave from arching Venture, he is a large man with a giant red ‘H’ tattooed on his face (the rest of the word “hatred” is tattooed vertically down his body) and wears military fatigues much like the Marvel villain Nuke. He is also now the Monarch’s next door neighbor after the Monarch moved into Phantom Limb’s former house. Sergeant Hatred mentions at a party he hosts that he can’t be within 50 feet of a minor due to a court order, though he is married to Princess Tinyfeet and has a massive foot fetish. The Monarch’s henchman, namely 21 and 24, routinely steal parts from Hatred’s technology, using his hover tank to rebuild the cocoon and 21 stole jet packs from him as well. He has revealed that he’s taken Venture as his arch-enemy as revenge on the Monarch for his years of theft, as he’ll treat them “like a goddamn king” and make Venture’s life wonderful. He was Brock’s former supervisor in the O.S.I. In Season 4, Hatred has become the Venture’s new bodyguard.
H.E.L.P.eR. (voiced by “Soul-Bot”): The Venture family’s personal helper robot. H.E.L.P.eR. is an acronym for Humanoid Electric Lab Partner Robot. He was created by Dr. Jonas Venture Sr. to look after his son Rusty, but now assists Brock in looking after Dean and Hank. He does not speak, but rather communicates via electronic beeps that are more or less understood by the Venture clan, similar in many ways to R2-D2. Though he has very sensitive feelings, the Ventures often treat him like an old appliance or pet.