Sabarath serves as the advisor and leader of the Good Thunder team aboard their teleporting fortress ship. Bald and frequently seen smoking a cigar, his visual design draws comparison to actor Telly Savalas. He recruits the three primary pilots—Shingo Hojo (military), Remy Shimada (espionage), and Killy Gagley (street gangs)—uniting them to protect Kenta Sanada and combat the Dokuga organization.

His background remains intentionally enigmatic throughout the series, later revealed to be that of an artificial being created by Professor Sanada, mirroring Dokuga's synthetic human Kernagul. The Good Thunder's primary computer system, "Father," is directly programmed from Professor Sanada's own mind patterns, positioning Sabarath as both a guardian of Sanada's legacy and a technological extension of the professor's will.

During the climax, Sabarath's origins prove crucial. He initiates a self-destruct sequence targeting NeoNeros, acknowledging this act will result in his own destruction. His sacrifice enables the team's victory and Kenta Sanada's subsequent journey into space. Sabarath does not appear in the sequel film *The Time Étranger*, set forty years later, confirming his physical absence in later events. His narrative arc concludes with the television series' finale.