Robin Hood

Robin Hood was one of the people left behind and kept under the rule. He is part of the rebellion along with Jasmine and Alexander Charming.

Camelot(Pre-Dark Times)
Robin Hood was forced out of Nottingham and forged an alliance with Cassim and Killian Jones. He barely escaped Cassim's betrayal and was presumed dead by Killian. He spent the rest of his days trying to find Killian but found it difficult since Killian had assumed the identity of Captain Hook and was on a devastating path to avenge his friend. He was close to finding Killian at the Battle for Camelot but Hook went through the portal before and it had since closed. This is when he meets Jasmine and the two will later begin the rebellion against the Dark King.

Rebellion
Robin is posing as a merchant in towns and recruiting new soldiers for the rebellion. This is where he meets Charming and sends him to Jasmine so they can prepare for the raid on the portal to an unknown location dubbed Camp Grimm.