Sinister Simian

Sinister is the sixth level of Magma Island and the 36th and final level of Tumble Dillo. It is the boss stage of Magma Island and the final boss.

Introduction
Tumble Dillo enters the volcano to see Doctor Bobo standing on the arena. Doctor Bobo says "Tumble, you obnoxious creature, you've finally arrived! Nobody makes a monkey out of me!" He leaps into the center of the ring and after a moment of silence, reemerges piloting a giant robot. He then says "Why, you incessant burrowing mammal! You'll rue the day you were ever created by that loon!"

Battle
''This is one intense final boss. This is a fight against Doctor Bobo’s giant bamboo robot, the Tiki-Bot. The arena is a large ring with the Tiki-Bot in the center. The Tiki-Bot starts out with a series of spinning laser. These lasers are on two levels: one that must be jumped over and one that must be rolled under. These sets of laser spin in opposing directions, and you must avoid both sets. Once that’s over, Bobo will rain down a shower of fireballs, which fall in three rounds. After that, the robot will slam its left fist down on the platform. This robot has a switch on the back of its hand. Roll into the switch to eject Bobo onto the platform, where he will be vulnerable. Roll into him and he jump back into his robot. You must repeat this process twice. Now he’ll change things around. The laser spin will alternate directions halfway through the attack. Instead of a fireball rain, the Tiki-Bot will slam its hands together in an attempt to squash Tumble. Double jump over this attack and roll into the switch. Roll into Bobo when he gets ejected. Repeat this once more. He now has one last hit left. He will repeat the improved laser spin and the fireball rain. Now, he will spin around with the robot’s hands palms up. You must jump over this attack. After spinning, the hands will flip over and slam down wherever they currently are. Elbow Drop the switch to eject Bobo a sixth time. Roll into him for the final time and the big monkey is down!''

Trivia

 * The original name of the level was going to be "Monkey Business".