The weakest of them all. Cries immediately if slapped. Height: 60cm. Grip strength: Left 7kg, Right 6kg. 100m sprint: 50 seconds. IQ: 20. Forgets everything after three steps. Brain weight: 47g. Personality: Loves stealing and breaks anything he doesn't understand. No regenerative abilities. Dies instantly if his heart is removed. Cannot heal injuries. The biggest weakling in the group.

He acts tough because he's quick to use violence, but he's actually just a weakling. Grip strength: Left 9kg, Right 8.9kg. 100m sprint: 55 seconds. IQ: 45. Brain weight: 50g. Height: 68cm. Personality: Thinks he's superior. He uses polite speech with anyone taller than him, but he still resorts to violence. Naturally, he has no regenerative abilities.

Kind-hearted. Forgives everything, but is easily exploited because he is too forgiving. However, he is the most decent among the Gugu Gagas. IQ: 50. Brain weight: 170g. Grip strength: 13kg for both hands. 100m sprint: 37 seconds. Height: 65cm. Personality: Occasionally uses polite speech with humans. Good at hide-and-seek. Never breaks things and is the most calm of all Gugu Gagas. Almost never causes trouble. If he gets carried away, he might act up a bit, but he just runs around. Cries very rarely, about 5 times a year. No regenerative abilities.