James Avery, aka Shredder, aka Uncle Phil does the voice of Fang in the English Dub.
Hokuto no Ken was released in Japan on VHS in 1988, two years after its theatrical release. The late release was due to the decision to animate a new ending. Unlike the theatrical version, in which Kenshiro falls unconscious during the final battle, the revised ending has both fighters still standing when they're about to deliver their mutual finishing blows before they're interrupted by Lin.
A version of the Italian dub that was released on VHS by Granata Press in 1993 under the title Ken il Guerriero was based on a workprint cut which features some of the violent scenes that are blurred out in the Japanese theatrical version (such as the scene in which Shin engraves the seven scars on Kenshiro's chest) without any discoloration or blurring.
Vampire Hunter D of the 1985 anime movie of the same name makes a cameo appearance as a villager in the scene where Raoh's second-in-command, Uighur, reveals the pot of flowers to the people. Similarly, Kenshiro makes a cameo in Vampire Hunter D as a villager during the scene where the Count's messenger arrives in the village to give the candle to Rei Ginsei.