When you complete the following tasks the corresponding Vivosaur will become available.
Unlock Dynal, Duna and Raptin:
After you get the time machine, defeat him in his starship.
Beat Saurhead a certain amount of times after you beat the game.
Unlock The 3 Guh Robots:
Use the time machine and defeat the 3 bots another time.
Defeat the 3 main BB bandits after you beat the game.
Unlock Squik and his other Elements:
Get ALL vivosaurs to rank 12.
Added by: Sanzano Jan 22nd 2010, ID#13092