You don't, by the way, get any rewards for having been Godzilla in a match, aside from the happy memories. While this is certainly reminiscent of the Doom Island from Chapter 5 Season 4 ...

Godzilla will be a Fortnite boss, but the lizard will not experience a 100% spawn rate. The latest leak from ShiinaBR ahead of the Titan’s arrival on the island suggests that it will be just like Doom ...