Characters like Kaiou Kaku ... Easily considered a twisted reflection of his half-brother Baki, Jack's obsession for surpassing Yujiro led him to rely on everything possible to get stronger ...

Following this appearance, both Tramp and Elon Musk, aka “Elom,” would appear in Baki Rahen, the latest arc of the series that focuses both on the protagonist and his brother, Jack Hanma.