Gensokyo/Kappa Pioneer

The Kappa Pioneer is a Hardmode enemy which may spawn in any body of water within Corruption biome (including the Underground Corruption). She will approach the player while periodically firing streams of cursed fire from her Cursefire Thrower. Any player that is hit will be inflicted with the Cursed Inferno debuff.

Kappa Pioneers drop between three and six Point Items, a small amount of Hydro Charge ammunition, and may also drop Broken Kappa Technology, a material used to craft Kappa weapons and the Experimental Transmitter, which is used to summon Nitori Kawashiro.

The Kappa Pioneer counts as a Kappa enemy, thus, killing enough of them (30) will summon Nitori Kawashiro.