Devolver

Devolver is a gun. Its bullets have a high chance to devolve enemies into Arrowkin.

Trivia

 * This gun is a reference to the publisher of Enter the Gungeon, Devolver Digital.
 * Its ammo counter is represented by Ds similar to the Devolver Digital logo.
 * The quote "Degenerates" preceding the description is a play on words, describing both the effect of the gun (degenerating the strength of enemies) as well as poking fun at Devolver Digital by implying they're degenerates (people of limited morality).
 * Prior to the A Farewell to Arms Update, the Devolver could devolve enemies into other enemies besides Arrowkin.