Kai Henrik Möller is a German voice actor known for his extensive work in dubbing anime and other international productions for the German market. He is also active as a speaker in German audio dramas. His career encompasses a wide range of characters, from leading roles in feature-length anime films to supporting parts in long-running television series.

In the realm of anime, Möller has lent his voice to a variety of prominent characters. He is the German voice of Michel Belmont in the mystery series Case File nº221: Kabukicho. In film, he voiced the role of Pankraz in the 2019 CGI film Dragon Quest: Your Story, and portrayed Kounosuke Minoda in the movie Okko's Inn. He also provided the voice for the character Rilu-Elu Belu-be in both Godzilla: Planet of the Monsters and its sequel Godzilla: City on the Edge of Battle. His work extends to children's animation, where he voiced Sebastian in the series Glitter Force Doki Doki.

Beyond the specific roles mentioned, Möller's anime filmography is extensive. He has voiced Helbram in the popular franchise The Seven Deadly Sins across multiple seasons. He is also recognized as the German voice of Mizuki in the long-running series Naruto. Other notable anime credits include roles in B: The Beginning, Bungo Stray Dogs, 91 Days, The Dawn of the Witch, and ACCA: 13-Territory Inspection Dept.. In the series Love of Kill, he voiced the character Abel Dankworth.

In addition to his anime work, Möller is a familiar voice in German audio drama series for children and young adults. He is frequently heard in productions such as Die drei??? (The Three Investigators), Die drei!!!, TKKG, and Fünf Freunde (The Famous Five). His work in the TKKG franchise dates back to at least the early 2000s, where he voiced characters like Hans-Uwe Kunkel. More recently, he was featured as Herr Sauerlich in the TKKG Junior series in 2023. His voice is also present in the German version of the children's series Thomas & Friends, where he has voiced characters such as Hiro, Peter Sam, and Alfie.

The breadth of Möller's career demonstrates his versatility as a voice actor, moving between the dramatic worlds of anime, the fantastical settings of video games, and the long-standing traditions of German audio drama.