Dr Neo Cortex's henchmen.
From left to right:
Ripper Roo (aka experiment#1): The very first Cortex's experiment, unfortunately became mentaly very unstable following a wrong setting of the Cortex Vortex. Ripper Roo has also developed a dangerous addiction to explosives. He has difficulties to contain his insanity.
Koala Kong (aka experiment#2): A calm strenght who doesn't speak a lot, but can become angry if he is provoked. When he isn't on a mission, Kong is the warder of the dungeon of Cortex's castle. He often gives a hand in the mines owned by the Komodo Bros. Kong's strenght allows him to lift heavy rocks and throw them far away.
Pinstripe Potoroo (aka experiment#3): This skilled gunman used to be Cortex's personal bodygard in the past, but finaly made an end to the contract following a dispute between him and Cortex about the interests. Pinstripe is now the CEO of the Cortex Power factory, and thanks to his management and accounting expertises, he saved the factory from bankruptcy. He is a controlfreak who hates when something doesn't happen as planned.
Komodo Joe (aka experiment#4): Cortex's bodygard with his brother Moe, both Komodo brothers owned the Dragon Mines, in which they extract gems. Joe is the hot head of the brotherhood, and fight hand to hand with opponents. Joe fights with a scimitar in each hand.
Komodo Moe (aka experiment#5): On the contrary of his brother, Moe thinks before acting, and prefer to fight from far rather to do close fight. As his brother, he handles scimitars with style, and can throw them with an incredible accuracy.
Tiny Tiger (aka experiment#6): Combining pure strenght and agility, Tiny is a dreadful fighter. He could chase his target on a long way with the only aim to destroy it. However, he isn't cleaver as the other henchmen, and if you keep calm, you could escape. Anyways the better advice would be to never cross his road.
Dingodile (aka experiment#7): Nice, welcoming and a little bit nonchalant, Dingodile could be a nice aquaintance if he wasn't a pyromaniac. He uses fire as well to burn things than to prepare toasts. Paradoxically, Cortex asked him to take care of his personal library. Fortunately, reading is the only hobby which allows Dingodile to contain his arsonist urge. His strong accent makes him difficult to undersand sometimes.
(The experiments #8, #9 and #10 have been declared as failure, as the three of them have denied Cortex's authority.)
I'm still thinking about the humanisation design for some of the Cortex's Henchmen. Anyways, this pict enabled me to have a general idea of all of them gathered X).