Yokoyama's sequel to the series, set in a parallel universe, is entitled His Name Is 101 (その名は101, Sono Na wa Wan-Zero-Wan).

As such, Koichi is entrusted with Babel's powers and joined by three protectors: Rodem, a shape-shifting black panther; Ropross, a pterodactyl-like flying creature; and Poseidon, a giant robot that always rises from the depth of the ocean when summoned.

Unfortunately, the three servants of Babel II, Rodem, Ropross, and Poseidon are confined in an underground nuclear test site by the CIA, so Koichi is forced to fight alone.

Here, Ropross and Poseidon have received powerful upgrades and the entire USA has declared war on Babel.

Japanese manga artist Hirohiko Araki said that he paid homage to Babel II by letting Jotaro Kujo wear a Japanese school uniform in Part 3 (1989–1992) of the JoJo's Bizarre Adventure manga series.