|“||On land, Levi make choice.||”|
|— Levi to Xander|
A warrior merman with an imposing presence.
Has dark brown skin and deep blue eyes. He is quite muscular and agile. In his merman form, he has scaly silver skin with a muscular torso and a long spiky fish tail. He also has small sharp teeth.
Levi is naturally aggressive and violent in the water, as a merman. He exhibits this personality in human form as well, especially when he is set out to murder Ryn for staying on land too long. Levi reveals a murderous personality being he killed Sean McClure, and tried to kill Ryn and her allies. Overall, Levi is murderous and also holds a strict view on his mermaid colony’s rules (specifically regarding Ryn’s involvement with humans).
Levi later changes when Ryn becomes the new alpha mermaid, there, he becomes submissive to her, after getting into a little fight with a vengeful Xander for murdering his father, Levi apologizes to him for his actions. Currently, Levi is learning the ways of humans and is adapting quickly, much like Ryn did. Levi developed into a courteous, kind and loyal person despite his initial-aggressive state.
Throughout the Series
Levi and Donna attacked Ben and the other fisherman aboard the ship. He first attacked them with a narwhal horn which was wielded as a spear. He then came aboard the ship and started attacking everyone. He got hurt a couple times, but survived. He was moved into the hold, but transformed into human form and escaped. He stabbed Sean McClure and escaped into the sea.
He returns to the surface along with Donna and mermaid Katrina in order to massacre the humans and to get Ryn to return home to the sea. He puts on male clothing and arrivals in Helen's shop, where he is intrigued by all merfolk-related artifacts that Helen had collected over the years. When Donna asks Helen where Ryn is, Katrina orders him to choke Helen in order to get her to answer. He releases her when she reveals that she doesn't know where Ryn is and leaves with Katrina and Donna. The three then find Ryn with Ben in the Marine Mammal Research Center, but Levi and Katrina reveal their real plan to have Ryn killed for spending too much time on land and with humans. Ben throws salt water at them and, with Ryn and Donna, flees, leaving Levi and Katrina writhing in pain as the salt water causes them to transform.
Moments later, he and Katrina walk in a park when he picks up a red ball and gives it silently back to a young girl who asks him to give it to her. At night, he and Katrina were wandering the streets when Sheriff Dale Bishop, who decided to look for them, found them. When he sounds the alarm, Levi and Katrina attack him, only to be scared off by gunshots. Sheriff Bishop went on to immobilize and capture Levi, but after struggling to break free and causing Bishop to crash, Levi escaped. He then retreated with Katrina to Helen's shop where they acquire antique spears for their battle.
Levi manages to wound Sheriff Bishop in the leg with a spear and flees when Maddie tries to shoot him. He then confronts Ben and nearly kills him, when Ryn (who defeated Katrina in another struggle) orders him to stop. He then kneels down in front of her and acknowledges her as the new Alpha. But Xander, who wanted to get revenge on his father's death, tried to kill Levi and ended up shooting Donna when Ben tried to intervene. Levi then carries Donna to Helen's house and later leaves with Katrina when Ryn orders them to never return again.
Many months later, Levi is forced to make a comeback, being attacked by the strong hypersonic waves from the Klesco Oil drill ship. Ben helps him to breathe better via extracting the excessive fluid out with a syringe. He and the rest of the colony begin residing at Ben's family cabin, until they start showing scales requiring them to rehydrate in salt water. In the episode "Oil and Water", he receives his ID from Jerry and Ben teaches Levi some things about human activity catching on quick.
By the episode "Leverage" he starts to become more comfortable around Xandar despite their hostilities, he dives in with the rest of the colony to sabotage the Klesco drill ship with helping Ryn cut through the drill's string with the blowtorches. When Sarge's neck is slit from the hook, he helps his colony take him to his final resting place where he pays his respects.
Levi visits Bristol Cove in "Serenity", Xander and Calvin find him at The Anchor. Later, he saves them from an encounter with players from Calvin's poker game. Levi goes to Helen's shop to spend the night, he quickly glances at Beth sensing she is a Hybrid.
In "Mommy and Me" he returns to Helen's shop with Mate wanting to take Ryn's daughter Hope. He promises to Ben and Ryn that he will take good care of the merbaby, teaching her to hunt and fight in the ocean. He and Mate are spotted by Xander and his fellow police cadet partner Annie.
"A Voice in the Dark" is when he witnesses Hope make her first kill in the water, he and Mate agree that she is ready to return to land. He fights in the Siren War against Tia's tribe with his colony and with Yura's, In the climax he witnesses her defeat Tia and like everyone else, he bows to her.
Ryn is Levi's current Alpha leader and is loyal to her and her friends and family. When Katrina tried to take over Ryn's top position as Alpha Female, he choose Ryn's side in the power struggle between the two. When he refused to Join her Katrina and her allies injured him nearly killing him; However thanks to his close friend Ben Pownall he was packed up. During the mating season, Ryn and Levi had chosen to be each others mates. She willingly allows him to take her newborn daughter Hope to learn how to hunt and survive in the ocean, later on Levi and Mate return to land to reunite Hope with Ryn.
Levi's former Alpha leader and was royal to her. It was this loyalty that when she ordered him to kill the human fisherman on the North Star he did without question. While he was kept prisoner in the ship's hold, he explains to Xander that was only killed Sean McClure because he cannot make his own decisions. This made him former enemies with Sean McClure's son: Xander McClure and his human friends.
He helps him recover after arriving on land, and since that time he began to learn the ways of humans has become close to Ben. Levi thinks of Ben as a close friend and maybe 'unofficial' a member of his Merfolk colony/family. Levi makes a promise to protect Hope with his life, they later reunite when Hope is brought back to land.
Levi has a complicated relationship with Xander. At first they where enemies due to him killing his father under orders from Katrina. After a brief fight between him and Xander, he could not be unable to bring himself to kill him. They become frenemies, at least, to the point where they could tolerate each other without violence.
He and Levi share a close bond just like Sarge did, they are first seen together in "Mommy and Me" wanting to take Ryn's daughter Hope to learn how to hunt and survive in the ocean. Later on in "A Voice In The Dark", they see Hope successfully slay a moray eel, and both decide to bring Hope back to Ryn.
- He is the very first merman to appear, and the second brown-skinned merfolk; the first being Donna.
- He is quite skilled with spears.
- He is the first that Maddie, Ben and Ryn help after eluding the sonic waves.
- He has great respect for Helen, aware of her one-eighth mermaid lineage.
- It is revealed that he had brutally murdered Sean, but only because he was ordered to.
- He becomes quite interested in the extraordinary showings of television.
- Shown to be very good at beer pong and dancing.
- He seems to prefer the ways of land more as he has more decisions he can make.
- He is the first full-blooded merman to meet those who have a blend of both merpeople and human blood.
- He silently mourns the loss of his merman friend, Sarge, after glancing at the necklace Helen gave to him before he died.
- Calvin refers to him as Aquaman, coming from the ocean, and Batman, for saving him and Xander from the guys at the poker game.
- He understands what it means to make a promise and keep it.
- Deadline — Freeform’s Mermaid Drama ‘Siren’ Gets Premiere Date, Casts Duo, Releases Clip (October 7, 2017)