This is an easy pattern. Circles are easy to crochet in general in simple dc, sc, etc.: just keep increasing groupings one more stitch farther apart for each and every new row and the circle should lay flat even if you keep going like that for forever.
Amigurumi Sailor Octopus Pattern - IMPORTANT: This listing is for a pattern not finished dolls! The pattern is available only in English language! He has blue blood and three hearts but although he's different he still can become.