Squire Alonzo and his faithful steed, Panza the camel, appear in "The Would Be Dragonslayer" attempting to slay Spike in the mistaken belief that all dragons are evil. After Alonzo learns that Spike is a friend, he apologises and explains that all he wants is to be a knight, but every time he tries to do what knights do, things go wrong. So Megan Williams, Spike and the Ponies decide to help him become a knight.
Squire Alonzo is voiced by Townsend Coleman, who later went on to voice Gobo Fraggle in the animated adaptation of Jim Henson's Fraggle Rock.