From Homestar Runner Wiki
Fat Dudley is Pom Pom's Old-Timey counterpart. Dudley appears to be The Homestar Runner's best friend, just as Pom Pom is in the present. Dudley may derive characteristics (dark eyes, jazzy voice) from Leon Redbone, a pop icon recognized for his guitar and vocal interpretations of music from the 1930s.
Similar to Pom Pom's "bubble talk", he speaks in jazz-like musical tones that only the characters can understand. Physically he seems much more human than Pom Pom: he has hands and feet, and wears clothing and shoes that fit the period.
|Pom Pom variations|
|Fat Dudley | Pan Pan | 2046 Pom Pom | Professor Experimento | Pom|