Desperaino is a Nighlok monster debuting in the Power Rangers Samurai episode "Forest for the Trees".
He has the ability to open a rain cloud above his victims' heads, causing them to encounter the most terrible misery of all: the loss of hope. He is armed with a spear that shoots bullets. He can open the umbrella-like object on his head to fly so he can have an advantage over land-ridden fighters. He was destroyed by Mike's Tree Symbol Strike and then destroyed by the Samurai Battlewing. He later attends a Halloween party with the other Nighloks in Nighlok Heaven in the Halloween episode "Party Monsters".
- He is voiced by Peter Gentil, who also previously voiced Yamiror during the Samurai season.
- Okakurage, his Super Sentai counterpart in Samurai Sentai Shinkenger.