Joostmod/The Mustache

The Mustache is a Post-Moon Lord melee weapon, which is crafted with a Cactus Token dropped from Jumbo Cactuar. The Mustache functions as a normal sword, also firing off two bouncing "split end" projectiles on every swing.

Solar Selenians can deflect the split ends of The Mustache.

Trivia
The Mustache, and the Jumbo Cactuar boss that you have to defeat to get it, and the other Cactuar enemies are all references to the Final Fantasy series.