Uncle Matt is Conchita's brother in Rat. Described as a rock of sense, Uncle Matt is a slightly posh middle-aged man of know determined occupation, but one who considers himself an expert on all things. He takes particular pride in pointing out the Latin names of any and all animals. Of all of the family, Matt views the transformation of brother-in-law Hubert into a rat in a more detached manner, going forth on the sociological aspects of rats and spouting pseudo-scientific theories.