The 1978 Japanese live-action incarnation of Spider-Man will appear in Into the Spider-Verse 2, according to a tweet from producer Phil Lord.
Lord responded to a fan who originally asked that, if the movie contained the Japanese Spider-Man, if he could help design the Into the Spider-Verse 2 version of the character. Lord responded simply enough: “He’s designed!”
He’s designed!
— Phil Lord (@philiplord) November 5, 2019
Source: IGN.com Japanese Spider-Man Confirmed for Spider-Man: Into the Spider-Verse Sequel