Barreled Scholar Bucrates

Barreled Scholar Bucrates (樽学者ブクラテス) is a stout little being with a barrel-shaped body and extensive knowledge, abile to disguise himself as an ordinary barrel. He is called "Mentor" by Captain Zahab and is the one who taught him how to obtain immortality by harnessing the power of the jewels produced by the Demon Beast Daitanix. He is also the uncle of Spectral Empress Iliess.

Though his vote was for his niece to become acting general among the Balban pirates' release, the position was given instead to Gun Boss Sambash. During Sambash's term to find a means to revive Daitanix, Bucrates offered his knowledge to aid Sambash in attempting various methods and seeking out different energy sources. However, when Sword General Budoh becomes acting general, Bucrates's aid was rejected by the samurai who had developed his own stategy to revive Daitanix. Insulted by Budoh's snub, BucratesIliess to sabotage Budoh before labeling him a traitor so she can take command. Though Zaihab knew of their treachery, he allowed them to believe that they got away with Iliess the new acting general.

However, Bucrates became suspicious of Daitanix's strange shaking and discovered that the demon beast was rotting due to being kept immobile for so long which led him to overhear Zaihab's scheme to use Iliess's soul gem to partially revive Daitanix before it sinks. After Iliess was killed by Gingaioh, Bucrates recovered her soul gem and attempted to revive her first only to be cut down by Zaihab. Powerless to prevent Battobas from shattering Iliess' soul gem and with his services no longer needed, Bucrates was chained up and thrown overboard into the briny deep.

Pucorpse Bucrates
However, escaping his fate and driven mad by his new-found hatred for Zahab, Bucrates changed into an aged form called Pucorpse Bucrates. Desiring Zaihab's death, Bucrates forced Hyuuga to work for him by trapping the wounded GoTaurus in a small barrel. During the Daitanix battle, he allows for Hyuuga to assist in the battle by releasing GoTaurus temporarily, but draws them both back when the battle is over. However, he is mortally wounded in episode 48, by Steerwoman Shelinda, for his betrayal before he can see his revenge fulfilled. He commits suicide in the following episode, to provide a distraction so Hyuuga can escape without being seen and take GoTaurus with him.