Ostrava is first found in 1-1 on a platform above some Dreglings. When talked to, he will ask the player to kill them. Upon doing so he will drop down and stand where they once were. Talking to him now will net the player the Brass Telescope. After talking to him, he will start to patrol the surrounding area and kill the enemies. He can be found in 1-3, being attacked by Blue Eye Knights.