Prettz is first seen begging Linaly and her Grandpa to let him go with them on a journey to check on the Crystal of Wind; an offer which Grandpa declines on the grounds that Prettz is merely interested in being with Linaly.
This ultimately proves futile as he follows them, anyway, and ends up saving the pair from a large serpent-like monster. Afterward, Grandpa is too fatigued to continue the journey, and Prettz ends up taking his place as Linaly's traveling companion. He has a short temper, but controls it for better accuracy in knowledge.
Prettz has an old clunker of a large motorcycle which he uses to take Linaly and himself places, usually in halfhearted attempts to get the two of them alone. While his motivation for helping Linaly initially appears to be self-serving, he reveals a courageous and noble side that is genuinely concerned with protecting Planet R. He constantly displays his courage in the face of monumental odds, and never gives up fighting, even when it seems that all hope is lost.
A carefree youth, Prettz's attitude can eclipse his innate skill with a blade, which is itself quite considerable. He has no trouble performing feats of acrobatic skill, and can even leap from a moving bicycle and slay an enemy in mid-air with no difficulty. Even so, he can be brash, crude, and very stubborn. It is unknown where he learned his skills, but based upon his inherent lack of personal discipline, it can be reasoned that his abilities are self-taught.
Prettz is thought to be a Samurai due to his exclusive use of sword skills with his Kikuichimonji nodachi. Other than the use of his nodachi, Prettz also employs the use of smiley-faced bombs (possibly sentient, since they smile before exploding) encased in a spiked shell, which splits in two, revealing a Pac-Man-esque ball that detonates with a potent blast.