Asriel (Undertale Film)

Asriel Dreemurr is a character in the Undertale 2025 film. He is the true form of Flowey, the biological child of Toriel and Asgore and the adoptive brother of Chara. He serves as the final antagonist of the film.

Appearance
Similar to Toriel and Asgore, Asriel has long ears, a snout, and visible fangs. In his normal form, he wears a green, long-sleeved shirt with yellow stripes and black pants, similar to the Chara's clothing. He also has a small wisp of fur on his head and lacks horns, unlike his father Asgore.

During the final battle, he becomes an all-powerful god of hyperdeath. The sclerae of his eyes become black, his fangs become longer, and he now has horns. He wears a long, dark purple robe with white sleeves and the Delta Rune on the front, with a large collar and shoulder pads. This robe is similar to Toriel's. He also wears a locket similar to the Heart Locket.

In his final form, Asriel's body becomes more geometric, his horns are longer, and his teeth get sharper. He has a pair of wings that continuously change color, and his lower body becomes sharp and heart-shaped, resembling the Delta Rune.

Personality
Before his death, Asriel was a docile, unadventurous, and loving child. He cared for Chara as a sibling, and he trusted her when she came up with a plan to escape the Underground that involved her consuming buttercups. After Alphys resurrects Asriel without a soul as Flowey, he becomes incapable of feeling love. This makes him bored and resentful. After temporarily regaining his compassion, he apologizes for his actions to Frisk and realizes the gravity of his actions as a flower. Much like his father, Asgore, he commonly speaks southern U.S. slang.

In his God of Hyperdeath form, he acts all-powerful and uncaring, but deep down, is actually very broken and sad, as the film shows him going through the different phases of the Grieving process. He denies that Frisk is not Chara, gets angry at her trying to SAVE him, bargains for Frisk to stop when Frisk continues to push forward, fills with sadness when Frisk refuses to let him win, and eventually accepts the truth and turns back to normal.

Abilities
When he gains his powerful god-like abilities, he gains many attacks that he can use at will to try and take down Frisk, such as fire magic, Star Blazing, Shocker Breaker, Chaos Saber, Chaos Buster, and Hyper Goner. His final form only shows off a barrage of comet like fireballs that attack Frisk, who is unable to move, and a powerful rainbow beam from both hands.

Differences from Game Character

 * In the game, as the player is saving Asriel, at some point he avoids hitting the player's soul with his attacks, and any attempt to get hit will make his attacks back away from the player. In the film, however, this does not happen, and his comet attacks simply become slower and less powerful as Frisk gets closer and closer to Asriel.