General AustinA U.S. Army Major General who played adviser to the G.I. Joe commanders. Known as "Iron Butt".
- The Brigadier
- No Name Given: His first name is classified.
- Reasonable Authority Figure: He has a thorough understanding of politics that enable him to see viewpoints from all sides.
Kwinn the eskimo
An eskimo mercenary who sometimes worked for Cobra or other enemies, but sometimes helped the G.I. Joe team due to his sense of honor.
- Exact Words: He promised Dr Venom not to kill him as he lived. When the traitorous doctor shoot him, a grenade falls out of the dead Kwinn's hand, killing Dr Venom.
- Iconic Item: His skull necklace.
William KesslerThe son of Cobra Commander. Billy was present for his father's Start of Darkness and grew to despise the madman that his father became. He eventually becomes a Ninja Apprentice and occasionally joins forces with others opposed to his father's plans.
- Archnemesis Dad: Cobra Commander.
- Audience Surrogate: Provided a civilian perspective on the Joe vs Cobra conflict.
- An Arm and a Leg: Lost an eye and a leg when Scrap-Iron blew up his car with a missle.
- The Determinator: This put him in a coma for six months, but he did not die.
- The Apprentice: Storm-Shadow is his Obi-Wan, the Blind Master is his Yoda.
- Expy: An Ideal Hero teenager with a pretty common name seeks revenge on a supervillain who wears a Cool Helmet for "what he did to my father." Turns out said villain actually IS his father. Gets trained by a master martial artist. Loses a limb, gains a cybernetic replacement, and becomes a better martial artist. Realizes that his father must be stopped, and that a confrontation with him is inevitable, but does not want to be put in a situation where he's forced to destroy him. Are we talking about Billy or Luke?
- Eyepatch of Power
- First-Name Basis: Usually just called Billy. Kessler is presumably his mother's maiden name.
- La Résistance
- Luke, I Am Your Father: More like Destro telling him "Billy, he IS your father."
- Missing Mom: Cobra Commander told Billy she was dead. He was lying.
- Restored My Faith in Humanity: One of the key catalysts in Storm-Shadow's Heel–Face Turn.
- Toyless Toyline Character
The Blind MasterAn American soldier who is blinded by a combat injury and "stranded in Tokyo", and is taken in by the Arashikage Clan, eventually becoming one of their Masters.
- Badass Grandpa: The Marvel comics implies that he war where he lost his sight was Korea, which would put him in his fifties at least.
- Canon Immigrant: Originally a comics only character, but mentioned in the animated movie and actually appears in the live action one.
- Cane Fu: Uses his cane as a weapon.
- Cool Car: A Ford GT 40 Mark V.
- Handicapped Badass: Despite being blind, he's still a master martial artist, is able to sense how close he is to the blast radius of a grenade, and he can still drive ("Only at night").
- Hawaiian-Shirted Tourist: Frequently wore a Hawaiian shirt and a Panama hat.
- Highly Visible Ninja: Hawaiian shirts tend to stand out. Occasionally lampshaded by other characters.
- Made of Iron: "The Blind Master has a talent for surviving explosions."
- Mighty Whitey: He's black, but otherwise fits a Retired Badass variation of the trope.
- Your Eyes Can Deceive You: Teaches this to his students.