|This article is about a/an monster in Kaizoku Sentai Gokaiger.|
He was assigned by Damaras to set up a beachhead for a full Zangyack invasion when his operation is met by Gai Ikari's intervention. Defeated by Gokai Silver using the Gokai Supernova Final Wave. An enlarged Osogain and six Zugormin units are then destroyed by Goujyujin.
- Height - 205cm (Giant Form - 51.3m)
- Weight - 154kg (Giant Form - 385.0t)
- His motif is the one of a horseshoe crab.
- He bears a resemblance to the Garthim from the 1982 movie The Dark Crystal.
- His name is a pun on the word "Osogai" (おそがい), which is the Nagoya-ben word for "terrible".