Kaede

Kaede is Zip's only other friend from his time while he was alive. She was the one who took in both Zip and Travis after their respective situations in life took a downturn. Zip comments that she "had a thing for strays". It's mildly implied that she and Zip might have made a nice couple.

Kaede briefly appears in the strip when Zip visits them during some time off and lets them know what happened. When Zip leaves, Kaede admits she finds the mental image of Travis and Zip kissing to be cute.