Speak One Truth, Build One Lie (a CRK/Cookie Run Kingdom Fanfic Series)
Kpoteau99 for Wizard Cookie/Head Builder Cookie
Wizard Cookie is a mage who is very down to earth and logical, though his voice is reminiscent of a quirky bumbling magic professor. He is also much younger than he actually sounds.
Sample of his canon lines here: https://www.youtube.com/watch?v=NQlvowmsYJ4
Head Builder Cookie has a voice identical to Wizard Cookie's, but he is far less confident. He is a village cookie from Shadow Milk's past who nervously questions if the Sage of Truth is actually telling the truth. Pure Vanilla Cookie will mistake one for the other during a scene. (Note: Head Builder Cookie is a fanon character.)
"I still can't believe Almond Cookie and Espresso Cookie didn't come to help search. Really, they're professionals, aren't they? It's bad enough Strawberry Cookie ran off on us."
"Please forgive my boldness, Great Sage. But may we speak in private? It's about the dam."
"I do not mean to sound doubtful, but...well, that was several weeks ago. And I wonder if perhaps circumstances have changed?"