In Fire EmblemEdit
Gangrel was the ruler of Plegia, known as the Mad King. He seems to enjoy war, and apparently could not care less about Emmeryn's peace negotiations. Cruel and easily distracted, he enjoys deceiving others. After being recruited into Chrom's army, he starts changing his ways, in part due to a harsh past that weighs on his mind. His birthday is March 16. He is the person in the army most afraid of heights.
Gangrel throughout much of the initial half of the game spends much of it trying to start a war between Plegia and Ylisse as well as acquire the Fire Emblem, with little success due to Emmeryn's pacifistic nature and the importance of the Fire Emblem to Ylisse. Gangrel kidnaps Maribelle in order to further instigate a war and seize the Emblem, but the plan fails. After the attempted assassination of Emmeryn which forces her to leave the capital, Gangrel attacks Ylisstol causing Emmeryn to return to the capital to protect her people, but she is captured by him upon her return. He plans an execution of Emmeryn at the Plegia Castle Grounds. Chrom's army arrives right before her execution and stops it just in time. As they rush to Emmeryn's execution spot and sends in Phila to rescue her, Aversa summons Risen Archers and foils the rescue attempt. With the situation under his control, he gives Chrom the option to either relinquish the Fire Emblem or watch Emmeryn be killed by the Risen. However before Chrom decides to give the Emblem, Emmeryn sacrifices herself and falls off of the cliff to her death. Gangrel congratulates Emmeryn on a fantastic sacrifice and relishes in Chrom's despair. With no one in power in Ylisse, Gangrel prepares to attack the now Exalt-less Ylisse.
However, Gangrel's army begins to lose faith in him, refusing to fight for a pointless war after hearing Emmeryn's words. Gangrel does his best to snuff out any traitors with little success, leaving him with a weak force to attack Chrom's army at the Border Wastes and is ultimately defeated by Chrom.
In Paralogue 18, Gangrel is revealed to have survived his last stand. Disgraced and broken, the only work the supposed dead king could get was with Zanth's pirates, working as a servant and was, ironically, being treated like trash as he had treated his soldiers. Eventually Zanth's group encounters Chrom and his army and Zanth throws Gangrel onto the battle field where the two eventually meet once more. As a pathetic shell of his former self, he requests that Chrom end his life since he has nothing left and believes that Chrom must be dying to kill him. However Chrom, needing all the help he can get, convinces Gangrel to join his fight against Grima, rather than throw his life away.
After the war, Gangrel fell into obscurity. Some said that he found a new kingdom to rule and ruin while others said that he ended up in the gutters. Regardless, most people agreed that he was dead in no time.
In Gangrel's supports with the male Avatar, he shows remorse for his actions, and reveals that he initially began his push to unify the continent so that together they could challenge the strength of the Valmese Empire, but became twisted by the thrill of war and nearly destroyed his country and killed many people. By the end of the support, he is cheered up and vows to rescue any citizen in Plegia that has lost their way. It is also revealed that while he is a member of the Grimleal, he does not worship or revere Grima, unlike many of the citizens in his country.
If Gangrel supports a female Avatar, he appears to be more upbeat and lively, and constantly tries to recruit the Avatar to serve as his personal tactician, trying various methods such as compliments, gifts, and even asking her straight out to work for him. By the end of the support, Gangrel confesses to the Avatar that what he really needs is someone to make sure that he does not do anything stupid when he returns to rule Plegia, and asks for her hand in marriage to ensure this.
In the Hot Spring of Bonds DLC Chapter, Gangrel is given conversations with Emmeryn and Aversa. In his first conversation with Emmeryn, he speaks about being forgiven for what he did to her, even offering to die if it would redeem him, and attempts to apologize, but quickly recants this when she notices. In the second conversation, he shows regret for his actions, speaking of how he felt he could change things, but all he got was blood on his hands that he feels he cannot remove. The idea that he would never be redeemed of his sins causes him to break down and cry, but Emmeryn comforts him, telling him that he is important and that she considers him her friend.
Story of Joining Sora's TeamEdit
When his wife met Heath Burns and joined the team, Gangrel joined to make sure no one harms her. Gangrel also proves his well behavior by assisting members on missions and he's loyal to Sora for giving him a job he likes.