Isabella Garcia-Shapiro

However, the rest of the costume is different, and it doesn't come with a button for the other eye.

So, for some handy tools out of my big toolbox of Night of the Living Candace Suit supplies, Ferb does not have any spoken lines in this episode, Beatrice the sentient Candace Suit is voiced by Alex Poffenmayer, one of Dan's daughters, and the eldest one, alongside her sister Mellie, who is also the voice of Gretel in Hamster and Gretel, Originally born as Isabella Poffenmayer, Alex's original name was also the inspiration of the character of Isabella Garcia Shapiro in this show.

And she did temp vocals with her father in his shows until she got her first major song gig when she did the song, I'm the Bomb, from the Hamster and Gretel episode, The Bitter Sitter.

And that led to her doing Phineas and Ferb 4X Revival.