Dopey is the youngest of the seven dwarfs in Snow White and the Seven Dwarfs. He is the only dwarf who never says a word or grows a beard. Eddie Collins performed live-action reference and provided any vocal work needed for the character. Although he never says a word, the dwarf Dopey's vocal effects were provided by the legendary Mel Blanc.
Dopey is often the butt of the other dwarfs' jokes and his silly, playful actions often annoy the pompous Doc and the short-tempered Grumpy. Not entirely dim-witted, Dopey simply acts in the vein of a toddler or a dog, which explains why his shenanigans are met with little to no punishment or confrontation, aside from a soft clunk on the head, or something along those harmless lines. The dwarfs are apparently used to his goofy actions and simply ignore them, generally.
Perhaps Dopey's most notable trait is his lack of speech. As mentioned above, Happy states Dopey is simply unaware whether or not he can speak, as he has simply never tried. In spite of this, he can occasionally be heard making various vocals, such as whimpers, hiccups, and a one-shot yell. Interestingly, his lack of speech does not seem to trouble the rest of the dwarfs, as they are shown to understand his other forms of communication just fine. Doc, specifically, was able to easily translate Dopey's blathering into a cohesive sentence prior to their first meeting with Snow White.