He converses with stammer due to him being dropped during testing. It was also stated in the episode "The Trouble with Claude" that he was wired incorrectly, hence the stammer. He always wears headphones, which allow him to tune into radio and communication signals from seemingly any source.
Face claims sorted by fictional characters from media like shows, anime, movies, games and other (like books, Creepypasta and amusement park rides like The Haunted Mansion).