De acordo com villains.fandom.com, sim, sua cabeça é um sanduíche.
Chuck's most distinguished feature compared to the other antagonists is that he has a sandwich for a head, and it appears to be an inherited trait since his brother Brent also has this feature. However, it has not been shown if his mother also shares this trait, since she is never seen.
source villains.fandom.com
Isso é apoiado por alguns outras fontes da internet mas todos eles poderiam estar citando da mesma fonte anônima.
A coisa mais próxima que pude encontrar de uma fonte canon vem de nhpbs.org.
In this clip, WordGirl and Huggy are held captive by the Evil Sandwich Making Guy. He has a sandwich for a head and mustard and catsup on his utility belt. He uses hot dogs to tie up WordGirl and Huggy.
source New Hampshire Public Television
Word Girl é um programa infantil da PBS e a NHPBS é afiliada da PBS.