You have to go on facebook and search "Ameba Pico".
Pico is around 10 more or less. Chico is a bit younger like 7~8. Coco is believed to be the oldest, around his adolelecence, like 13.
Pico means 10-12 = 0.000000000001
It's Pico de Gallo, because in spanish, they use two "L' to get the "y" sound.
Pre history is something that hasn't happened yet and you will have to wait for it.