Russell

is a boss in happy tree friends: deadeye derby. He is the third boss in the game, and is fought in Rabid rapids. When defeated, you will unlock Flaky. He is a light blue sea otter dressed like a pirate. He has a long tail and some whiskers on his face.

Boss Battle
In the beginning of the battle, Russell will attack you with his basic slingshot while launching large cannonballs at you. These can deal large amounts of damage, so tap them away as fast as you can. When Russell's health bar is depleted, he will go onto his next phase. Russell will blow a whistle, causing his giant squid to slap you with it's tentacles. Russell will call it with his whistle, so hit him when he gets ready to blow his whistle. When his second health bar is depleted, the giant squid will take Russell and try to eat him. The squid uses the ship's remains as a slingshot to attack you, and it will occasionally slap you with its tentacles and deal some damage. You can tap these away though. In the end of the battle, the squid will close it's mouth, ripping off Russell's arm and hook, swallowing him in the process. The squid will drown and the battle will be over.

Difficulty: Medium (Russell) Little Hard (Russell And Squid) Hard (Squid)

Recommended characters
A good character to use in this boss battle is Petunia. She helps to avoid the killer fish from attacking you, giving you more time to attack, and so your shots don't get interrupted. Another good character to use is Toothy. Rabid rapids a lot harder to aim in then Terror trials, or Camp pokenyeout.

A good tip is to prepare to load your slingshot up during the last phase because sometimes the squid will swim up, not holding it's slingshot. Another nice tip is to quickly let go of pulling your slingshot at Russell when he's pulling the cannonball lever and when he blows his whistle, because this interrupts the action, like how the players shots are interrupted when attacked by a piranha.

Trivia

 * You can still get an bullseye on Russell's eye-patch covered eye-hole, despite him him not having an eye there
 * This is proved in the episode, "In a Jam"