Biologist

The Biologist has come to the island to study the wildlife there. He takes part in the story but also provides smaller quests like hunting various animals around the island. He will only be in Oasis if the player has reached a specific point in the main quest line. He will give out daily quests that reward the player with trophies and enable him to go on various hunts.

He is formally introduced to you after reaching Oasis and when you finish speaking with Misha. He has you go get samples of a subject and later quest require similar tasks, including investigating missing corpses.