Jonouchi connected Joe with Yugi Mutou's pet U2 for a data exchange. As Digital Pets commonly took after their owners, Joe began to bully U2, like how Jonouchi used to bully Yugi. The two pets became friends afterwards, similar to Jonouchi and Yugi.
After Kujirada got his pet, Devil Master, to eat Anzu Mazaki's pet, Sumomo-chan, Jonouchi connected Joe to Devil Master to battle. Joe initially caught Devil Master with a sneak attack, but was ultimately eaten too. Hiroto Honda avenged the two of them by having Super Strawberry beat Devil Master.