Captain Jelly (キャンディーバード Kyandībādo?, lit. "Candybeard") is the Sweet Mountain boss in Sonic Colors. It resembles a pirate with a lollipop as his "sword". This boss has an upgraded counterpart, Admiral Jelly.
The fight begins with Sonic at the front of a candied pirate ship, and he needs to get past a long row of cannons shooting cannonballs to the back of the ship to Homing Attack a switch, which almost causes the ship to crash. The battle seems too easy, but then Captain Jelly shows himself. Sonic jumps off the ship, and Captain Jelly follows with a crew of bouncy rubber crewmates, which luckily are harmless. If Sonic obtained a Yellow Wisp from the cannonballs on the ship, he can use it once you are on the ground. The Yellow Wisp allows Sonic to drill into the ground and attack Captain Jelly from underneath. Wisps cause double damage, and this makes it possible to kill Captain Jelly with only 2 hits as opposed to 3 or 4 with a Homing Attack.
Sonic fights the boss on normal ground. In the fight, the player can use the Red Burst, but this is optional. The attack patterns of the boss is simple but in order to hit him, you need to attack his crewmates by boosting at them. Once he's down, his core on his head will be shown and that's a chance to hit him. After getting damaged a few times, Captain Jelly will summon his pirate ship, which will launch cannonballs at Sonic (the regular cannonballs can be knocked back at Captain Jelly while the flaming cannonballs cannot be sent back and will damage Sonic). Using the Red Burst can do double damage and burns Captain Jelly for a few seconds. When his health runs low, he will summon a bunch of his crewmates to form a stacked wall to crush Sonic.