Aunt Grizelda (simply known as Grizelda) is a minor antagonist in the 2012 animated adaptation of The Lorax. She is the aunt of The Once-Ler and like the rest of her family, she cares only about money.
She is voiced by Elmarie Wendel.
Grizelda works for her nephew, The Once-Ler, in chopping down trees to make thneeds and ruin the Truffula Forest. The Lorax tells The Once-Ler and his Family that they can not live here, and Grizelda starts calling the Lorax a "giant fury peanut" and they start a fight. The Once-Ler told the Lorax that he wouldn't hit a woman, the Lorax stops and says "That's a woman?" as he become surprised.
When the Lorax sees Brett and Chet chopping some of the trees down, he tries to stop this, but then Grizelda stops him and told him that Mr. Once-Ler is not seeing anyone right now. She toss The Lorax aside when he tries to remind the Once-Ler of his promise to never cut down the trees.
After the Truffula Forest is all ruined without any thneeds left, Grizelda packs up and leaves off with her family and The Once-Ler stays in the bleak forest and becoming a recluse.
- Grizelda's current life is unknown, whether deceased or very old (since the Once-Ler is very old).
- The Lorax mistaken Grizelda for a male. Later, he called her "Sir" and demands that he needs to talk to The Once-Ler.
- It is very possible that she was named after the Monkees's song "Your Auntie Grizelda".