Here are the people who could voice Mary Weather from a Dexter's Laboratory spinoff/reboot. I hope she would get a speaking role.
1 Cristina Pucelli
Cristina Pucelli is an American actress who provides voices for cartoons and video games. Her most-known role was that of Joe's girlfriend, Silvia, in the Viewtiful Joe games.
The Luan voice would totally fit her! I bet she does tell jokes. The bubbly personality suits her own personality! - DynastiNoble
2 Grace Rolek
The Connie voice possibly suits her. She might sound cute and sweet. - DynastiNoble
3 Grey DeLisle
Erin Grey Van Oosbree, credited as Grey DeLisle and Grey Griffin, is an American voice actress and singer-songwriter.
The Mandy voice will sound more cheerful and less blunt and dull. The most suitable voice was either the Sam Manson voice or Lor McQuarrie voice. - DynastiNoble
4 Kari Wahlgren
Kari Wahlgren is an American voice actress who has provided English language voices for over a hundred cartoons, anime and video games. She got her start in anime voice-overs as Haruko Haruhara in FLCL, and would later land major roles in a number of series: Robin Sena in Witch Hunter Robin, Lavie Head ...read more.
The Sparkles voice would totally, and literally, suit her for some occasions. - DynastiNoble
5 AJ Michalka
Amanda Joy "AJ" Michalka, often credited as simply AJ, is an American actress, singer-songwriter, and musician.
The Stevonnie voice will suit her voice and make her sound "pubescent-like". - DynastiNoble
6 Tara Strong
Tara Strong is a Canadian–American actress who has done work in numerous films and television series, both live-action and animated.
In my opinion, the Shareena Wickett voice might suit her! - DynastiNoble
7 Kristen Li
The Bubbles voice fits her very well, but might sound like she's 13. - DynastiNoble
8 Cathy Cavadini
The Blossom voice is the most suitable voice. - DynastiNoble
9 Janice Kawaye
Janice Kawaye is an American voice actress known for her roles as Ami in the cartoon Hi Hi Puffy AmiYumi which aired on Cartoon Network in the 2000s, Jenny, the title character in My Life as a Teenage Robot, and Gi in Captain Planet and the Planeteers.
The voice might sound like Jenny and Ami might perfectly suit her! This is the best choice ever yet! - DynastiNoble
10 Mae Whitman
Mae Margaret Whitman is an American actress and singer. After making her film debut as the daughter of Meg Ryan's character in When a Man Loves a Woman, she appeared as the daughter of George Clooney's character in One Fine Day, and was then cast as the President's daughter in Independence Day.
The Little Susie voice is cool and may suit her very well. - DynastiNoble
11 Amy Poehler
Amy Poehler is an American actress, comedian, director, producer, and writer. After studying improv at Chicago's Second City and ImprovOlympic in the early 1990s, she became part of the Chicago-based improvisational comedy troupe Upright Citizens Brigade.
Her Joy voice suits perfectly but sound like she is 14. - DynastiNoble
12 Hilary Duff
Hilary Erhard Duff is an American actress and singer. Duff began her acting career at a young age, and quickly became labeled a teen idol as the starring titular character in the television series Lizzie McGuire.
Her Lizzie McGuire voice suits her perfectly along with her singing voice! - DynastiNoble
13 Hynden Walch
The Starfire voice may sound good as it seems! Love her voice! - DynastiNoble
Lights Poxleitner-Bokan is a Canadian singer, songwriter, and musician. She is known for her gold-certified albums The Listening and Siberia as well as singles "Drive My Soul", "February Air", "Ice", "Second Go", "Toes", and "Up We Go".
Lights was the best singer ever! Even her singing voice suits her! When she speaks, she sounds like a teenager. Love her. - DynastiNoble
15 Laura Bailey
Laura Dawn Bailey is an American voice actress and ADR director who provides voices for English-language versions of anime and video games, as well as in cartoons.
Her Emily voice suits her! - DynastiNoble
16 Amanda Leighton
17 Kristen Schaal
18 Rowan Blanchard
Rowan Blanchard is an American actress. She is known for her role as Riley Matthews on the Disney Channel series Girl Meets World.
19 Liliana Mumy
Liliana Berry Davis Mumy is an American actress and voice actress. She appeared as Jessica Baker in the Cheaper by the Dozen movies with Steve Martin, Lucy Miller in The Santa Clause 2 and The Santa Clause 3: The Escape Clause with Tim Allen.
20 Nika Futterman