|Full Name||Quiful Yaster|
|Date of Birth||August 3|
|Family and Relations|
|Quiful Barrett (son)|
| Quiful |
|First Appearance||Quiful Barrett: Quest for Cronomipo|
|Latest Appearance||Quiful Barrett: Quest for Cronomipo|
Quiful is a large, chubby man who is somewhat old. He has blue hair, and a large head that is almost rectangular. He wears a green shirt, with red pants and brown shoes. Yaster has red eyes.
Quiful is a caring dad, who is helpful to everyone, but mainly Barrett. He doesn't get angry easily.
In this game, Quiful only has a minor role. He appears only in Grass Town, in both the beginning and ending of the story. In the beginning, when Barrett tells him that he wants to be an adventurer, Yaster says to prove himself able by collecting a First Birthday Gift. Barrett succeeds when he defeats an Itemite and brings back the Electric Bow. Yaster congratulates him, and sends him out to collect more FBGs all over Grass Town. Once Barrett reaches the town's end, Yaster catches up with him and informs him about the legend of Cronomipo, and sends him to retrieve it.
Yaster also appears in the end of the game when Barrett returns to Grass Town. Yaster is impressed with him.