Cecilia Guerrero is a Mexican dubbing and voice actress, as well as a scriptwriter and illustrator. She has built a career providing Spanish voices for a wide range of characters in anime, animated series, and live-action productions for the Latin American market.

In the realm of anime, Guerrero has an extensive list of credits. Among the roles you noted, she is confirmed to voice Misaki Jingūji, also known as Yellow Gelato, in the series Love After World Domination. She is also the voice of Dia Viekone in The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat and Rozaria Elenor in Noblesse. For the series I've Been Killing Slimes for 300 Years and Maxed Out My Level, her role is listed as Nahna Nahna, rather than Flatorte. She is also confirmed as the voice of Tsukasa Tsukuyomi in TONIKAWA: Over The Moon For You.

Her other notable anime voice work includes characters in a variety of popular series. She has voiced Iris in To Your Eternity, Mimi Yamada in Platinum End, Rei "Kurei" Yasaku in Do It Yourself!, and Shunrai Yamamoto in Orient. Her credits also include roles in So I'm a Spider, So What?, Sakugan, I'm Standing on a Million Lives, and 7SEEDS, among many others. In addition to principal roles, she frequently provides additional voices for numerous anime productions, such as Kaiju No. 8, Jujutsu Kaisen, KONOSUBA, Rent-a-Girlfriend, and 86: Eighty-Six.

Beyond anime, Guerrero's voice can be heard in various animated series. She voices Scarlet Jagger in 100% Lobo: La leyenda del anillo lunar, Izel in the adult animated series Onyx Equinox, and Kiki in Rainbow Ruby. She is also the voice of the character Seis (6) in the children's series Numberblocks.

Her work also extensively covers live-action dubbing for films and television. She is well-known as the Spanish voice of Maxine "Max" Mayfield, played by Sadie Sink, in the hit series Stranger Things. Other prominent live-action dubbing credits include roles in series such as Baby, Get Even, Everything Sucks!, and films like Bird Box: A Ciegas, The Perfection, and See You Yesterday.