Donkey Kong
Donkey Kong or DK is the head ruler of Kongo Bongo Island and hears the bad news of the Kong's banna hoard being stolen by the Kremlings. He's dissapointed about it and must get them back. This strong ape is capable of pounding a lot of enemies but cannot do this quest alone and requires his friend's help.
Diddy Kong
Diddy Kong is the nephew of Donkey Kong. He is held inside a DK barrel and is trapped inside so he must wait for DK to help him first before he can help him. This little chimp isn't as strong as DK but is capable of pounding certain enemies as well.
Crankey Kong
Crankey is DK's father (I think) that gives certain advice to Donkey Kong. He really doesn't want to help DK because he only cares about the island too much and sometimes himself. He's old with a cane and rocking on his chair and scolds DK and Diddy a lot. Though he is wise, just a jerk sometimes but not always.