Elsa Bloodstone, the supernatural monster hunter joining the Marvel Rivals roster as a playable character, is voiced by actress Helen Sadler. Sadler is known for her work across television and animation, with notable credits including True Blood, Love Death & Robots, and LEGO Star Wars.
Quick answer: Helen Sadler provides the voice of Elsa Bloodstone in Marvel Rivals.

Who Is Helen Sadler?
Helen Sadler is an actress whose career spans live-action television and voice work. She appeared in HBO's True Blood and contributed voice performances to Netflix's animated anthology Love Death & Robots as well as the LEGO Star Wars franchise. Her casting as Elsa Bloodstone in Marvel Rivals marks her entry into the Marvel gaming universe.
Elsa Bloodstone's Voice Acting History in Games
Sadler is not the first actress to voice Elsa Bloodstone in a video game. The character has appeared across several Marvel titles over the years, each with a different performer behind the mic. In Marvel Avengers Academy, Jeni Dean voiced the character. Kari Wahlgren took on the role for Marvel Ultimate Alliance 3: The Black Order. With Sadler now handling the part in Marvel Rivals, the character continues to receive fresh vocal interpretations with each new game appearance.
Elsa Bloodstone's Comic Book Origins
Elsa Bloodstone first appeared in Marvel Comics in Bloodstone #1, published in December 2001. Created by writers Dan Abnett and Andy Lanning alongside artist Michael Lopez, she is the daughter of Ulysses Bloodstone and the sister of Cullen Bloodstone. Like her father, she is a monster hunter, wielding superhuman strength, speed, durability, and a regenerative healing factor. She also possesses immunity to vampire bites — her blood is lethal to vampires who consume it.
Much of her power stems from the Bloodgem fragment she wears on a choker, though she has also inherited some abilities genetically. She is an expert marksman and has carried an arsenal ranging from Uzis to rifles concealed in a guitar case during her time with the Nextwave squad.
Over the years, Elsa has served on multiple Marvel teams, including the Midnight Sons, the Fearless Defenders, and Nextwave. She played significant roles in major comic events like Monsters Unleashed, Civil War II (through the A-Force tie-in), and the Damnation limited series.

Elsa Bloodstone in Live Action and Other Media
Beyond comics and games, Elsa Bloodstone appeared in the Marvel Cinematic Universe through the 2022 Disney+ television special Werewolf by Night, where she was portrayed by Laura Donnelly. That version of the character was depicted as the estranged stepdaughter of Verussa Bloodstone. The character has also appeared in numerous other Marvel games, including Marvel Contest of Champions, Marvel Strike Force, Marvel: Future Fight, Marvel Puzzle Quest, and Marvel Snap.
Sadler's casting fits a pattern of Marvel Rivals bringing in voice talent with established genre credentials. For players curious about the character's deeper lore, Elsa Bloodstone has over two decades of comic book history to explore, but in-game, expect the sharp-tongued, gun-toting monster hunter that Marvel fans have come to recognize.