ZASFa is the Father-like relationship between Zim and Shim. It's hard to distinguise their relationship sometimes. In Zim's over-egoistical mind-set he sees anyone shorter than him stupid and just a obstacle in his way, because of this he sees Shim, the one who has un-dying gratitude and loyalty to him, as an annoying little pest that is easy to make angry. However after several experiences with the older smeet he finally starts forming a sort of bond with him that is similar to his and Gir's. He takes most responsibilty for Shim and even though he wont admit it, loves him like a father.