Judau Ashta is the 14-year old protagonist in Mobile Suit Gundam ZZ. He later returns as a supporting character in Mobile Suit Crossbone Gundam: Skull Heart and Mobile Suit Victory Gundam Outside Story under the alias Grey Stoke.
Judau is brash and smart-mouthed, always suffering from greed in the beginning. His need for money is because he wishes to help his little sister, Leina Ashta, go to private school and have a better future than he will. Because of this, he often skips school to work as a junk dealer and bring in materials for money, trying to avoid Beecha at times to avoid sharing the profits. He resorted to stealing the Zeta Gundam multiple times before becoming a full-time mobile suit pilot. Judau seems to despise adults, blaming them for the war that is now occurring.
Judau is not very skilled in physical combat, but he is capable at sneaking around at times to avoid detection, though it is mostly in an environment he knows, such as the junkyard in Shangri-La. His real power comes in piloting a mobile suit. While sloppy at handling the Zeta Gundam initially, he improves over time and performs admirably with the ZZ Gundam.