Grumpy Old Geeks People John Cena Person John Cena 2 mentions in 1 episode A performer whose voice the hosts say was used by a Meta AI chatbot. Mentions 695: Mad Hatter May 2, 2025 22:53 the voices of celebrities like Kristen Bell and Judi Dench and John Cena 23:10 a Meta AI chatbot with John Cena's voice