Florus van Rooijen is a Dutch voice actor known for his work in Dutch-language dubs of animated series and films, particularly within the anime genre. He has built a extensive career lending his voice to a wide array of characters in productions for television, film, and video games.

Van Rooijen is prominently recognized for his roles in the Bakugan Battle Brawlers franchise. In Bakugan Battle Brawlers: New Vestroia, he voiced multiple key characters, including Ace Grit, Lync Volan, Michael Gehabich, and Prince Hydron. He continued his involvement with the series by taking on the role of Gill in Bakugan Battle Brawlers: Gundalian Invaders. His work in the anime genre extends to the long-running Pokémon series, where he has been a regular presence. He has provided the Dutch voice for Professor Oak across several iterations, including Pokémon Advance, Pocket Monsters: Diamond & Pearl, Pokémon: Black and White, Pokémon XY, Pokémon Sun & Moon, and the film Pokémon the Movie: I Choose You!. Additionally, he voiced Sophocles in Pokémon Sun & Moon, Saturn in Diamond & Pearl, and various other characters in the franchise. His other notable anime credits include the role of Masamune in Beyblade: Metal Masters, Dren in Tokyo Mew Mew, and Calcifer in the Netflix Dutch dub of the Studio Ghibli film Howl's Moving Castle.

Beyond anime, van Rooijen has demonstrated his versatility by voicing characters in a wide range of Western animation and films. He notably voiced the title character Mario in the Dutch dub of The Super Mario Bros. Movie. He also voiced Ben Tennyson in Ben 10 and Ben 10: Alien Force, and took on the role of Jake in American Dragon: Jake Long. His other voice credits include Apothecary Gary in Amphibia, Taro and Yuna's father in Stitch!, and R.K.P. (Ruimte Klomp Prinses) in Adventure Time. His work also encompasses live-action dubbing, such as providing the voice for Rowlf in the Dutch version of Muppets Most Wanted.

In addition to his on-screen voice work, van Rooijen has contributed to the Dutch localization of video games, with credits including the title Advance Wars 1+2: Re-Boot Camp. His professional background also includes work on the other side of the recording booth, having served as an ADR Director for the Dutch version of the Star Wars: Visions animated series. Throughout his career, he has frequently collaborated with a consistent group of fellow Dutch voice actors, including Marcel Jonker, Huub Dikstaal, Thijs van Aken, and Frans Limburg, among others.