Milo

Friends

 * Bull
 * Dilweed Chuck
 * Fungus Chuck

Enemies

 * Buford Butternut (formerly)

Appearance

 * Enter the Sheep (first appearance and first speaking role)
 * Intelligence Not Included
 * Smell the Knowledge (cameo)
 * Swimming Fools
 * Quills Unleashed

Trivia

 * So far, he has appeared 4 times in the series.