Question: Which DC comics fictional character is played by Sirena Irwin using only voice?

Context articles: Manhunter (Kate Spencer)
Stuff the Chinatown Kid
Publication history of Dick Grayson
Paul Tibbitt
Wally West (disambiguation)
Mera (comics)
List of Teen Titans Go! episodes
Goldface
Helena Sandsmark
Sirena Irwin

Manhunter (Kate Spencer) is a fictional character, a superheroine appearing in DC Comics.
 She is the eighth DC Comics character depicted using the name Manhunter, and the first female to do so.
 The character first appears in "Manhunter" (vol.
 3) #1 (October 2004) and was promoted by DC Comics as relevant to the popular "Identity Crisis" limited series.
Stuff, the Chinatown Kid is a DC Comics fictional character, and sidekick to the original Vigilante.
 He first appeared in "Action Comics" #45 (February 1942).
This article is about the publication history of the DC Comics fictional character Dick Grayson, who has been portrayed in comic books as Robin, Nightwing, and Batman.
Paul Harrison Tibbitt is an American animator, television producer, writer, storyboard artist, songwriter, voice actor, and director, best known for working on the animated series "SpongeBob SquarePants".
 He was the co-executive producer of the show and was also the voice of Potty the Parrot; he has also voiced DoodleBob and previously voiced Betsy Krabs before Sirena Irwin took over.
 He made his feature film directorial debut directing "".
 Tibbitt studied in the Character Animation program at the California Institute of the Arts.
Wally West is a DC Comics fictional character and the third Flash.
Mera ( ) is a fictional character appearing in American comic books published by DC Comics.
 Developed by Jack Miller and Nick Cardy, the character first appeared in "Aquaman" #11 (September 1963) as a queen of the sea.
 Mera was ranked 81st in "Comics Buyer's Guide's" "100 Sexiest Women in Comics" list.
"Teen Titans Go!
" is an American animated television series based on the DC Comics fictional superhero team, the "Teen Titans".
 The series was announced following the popularity of DC Nation's New Teen Titans shorts, both of which are based on the 2003 "Teen Titans" TV series.
 "Teen Titans Go!"
 is a more comedic take on the DC Comics franchise, dealing with situations that happen every day.
 Sporting a new animation style, "Teen Titans Go!"
 serves as a comedic spin-off with no continuity to the previous series, and only certain elements are retained.
 Many DC characters make cameo appearances and are referenced in the background.
 The original principal voice cast returns to reprise their respective roles.
Goldface is a DC Comics fictional character, originally a foe of Green Lantern (Hal Jordan).
Professor Helena Sandsmark is DC Comics fictional character created by writer/artist John Byrne for the "Wonder Woman" comic book series, first appearing in "Wonder Woman" Vol 2 #105.
 The mother of Cassandra Sandsmark (the second Wonder Girl) and a distinguished academic in the field of archaeology, Helena is also close friends with her daughter's mentor Wonder Woman.
Sirena Irwin is an actress whose credits include Mrs. SquarePants on the animated television comedy, "SpongeBob SquarePants".
 She also voiced Mama Krabs in the episodes "Enemy In-Law" and "Friend or Foe" among many others and also voiced Squilvia in "Love that Squid" (SpongeBob SquarePants).
 She was a series regular on Stan Lee's "Stripperella" as Persephone Cliche and has guest and co-starred in multiple television shows.
 She was a lead in "The Trip", a popular gay film.
 She also provided the voices for Mera and Lois Lane in "".
 In 2011 she premiered the role of Lucy Ricardo in "I Love Lucy: Live on Stage" in Los Angeles, and has toured with that show for several years.
 She was awarded Best Actress in a Touring Production at the BroadwayWorld Chicago Awards for the role.