Wavey Davey is the mechanic for smuggler Jimmy Cole, who took care of his plane and makes it "run like a stallion". He also was working with Homicide Lieutenant Jones to extort money from smugglers to prevent their families from being killed by explosive devices tied to their spouses/girlfriends/etc. When Davey kidnapped Trudy Joplin (posing as Tubbs' "Wife") and prepared to extort money from him, Jimmy arrived to defend Tubbs and Crockett, Davey was subdued and arrested for his part in the extortions, and gave information that saved Trudy.