Yellow Pikmin

Yellow Pikmin are the second type pikof Pikmin you find in the first game. They are unique among pikmin due to their genuinly unstable DNA structure, which causes the Yellow Pikmin to continously change powers. Yellow Pikmin "pick" what immunity they want which has given them the delusion that they're some sort of "Justice Pikmin" and have developed strong political views.

History
Yellow Pikmin are the result of carrots being exposed to high levels of electric and protonic radiation within a neuclear powerplant. The original aim was to somehow grow ears on a carrot, which they achieved. Unfortunatly, one of the scientists had fleas and the fleas fused with the carrot to create this special sort of Pikmin.

Due to this, Yellow Pikmin are covered with an electron cloud and so their DNA is continuously changing.

Yellow Pikmin first found the Blue Pikmin. At this point the Blue Pikmin were busy trying to drown various things. This made the Yellow Pikmin feel civilized and more important. So they started acting all snooty and high class towards the Blue Pikmin and declared "We Do not agree with your culture of torture". To deal with the blues they developed bombs that only they could touch. If another pikmin tried to pick up a bomb rock, it would transform into Optimus Prime and destroy it.

The first thing the Yellow Pikmin done to try and stop the Blues was to build a fence around the pond and chained themselves around it. This proved epic fail because the Blue Pikmin simply trampled them. As a result, the Yellow Pikmin bombed the blues' lake in an attempt to kill them. Unfortunatly the blues weren't in the lake at the time and so they only succeeded in killing three tadpoles and a minnow.

By the time Olimar found the Yellows, they were in the process of planning an elaborate attack on the Red Pikmin, since the Red Pikmin wouldn't accept their ASBOS. They had built walls everywhere, but Olimar forced the Yellow Pikmin to abandon their plans and work for the Red Pikmin. As a result the Yellows grew annoyed at Olimar and planned to bomb him, they failed however due to the Red Pikmin telling on them, as a punishment Olimar fed them all to Emperor Bulbax.