In short: This is a hypothetical scenario where a Z-Fighter (often Trunks or Bulma) gathers the Super Dragon Balls and wishes for the “strongest possible version of Android 18 from across all realities” to join their fight against a multiversal threat.
In canon, the Super Dragon Balls grant any wish without limit. But what if a wish wasn’t just about restoring a planet or reviving the dead? What if someone wished for —not a copy, but the actual individual, pulled across dimensional barriers? dragon ball interdimentional wish android 18 u updated