N-Zap '89
From Inkipedia, the Splatoon wiki
The N-Zap '89 is a future weapon for Splatoon that is currently not playable. The N-Zap '89 is a custom variant of the N-Zap '85. The weapon may have the same stats but may have a different Sub Weapon and Special Weapon. However, this is future content and this information is possible to be changed.