What are some popular Marvel Comics characters with Japanese origins or influences?

Several Marvel characters have strong ties to Japanese culture or were created/influenced by Japanese creators. Notable examples include: Shang-Chi, the Master of Kung Fu; Ghost Rider (with his demonic origins); Elektra (with her Greek/Japanese-inspired assassin background); and various characters featured in the 'Beyond the Firm' storyline, often drawing inspiration from Japanese folklore and mythology.