I don't think he could have been made but he was indeed an interesting character. I remember from "Underboss" that he made Gotti swear on his dead son that he wouldn't hurt him and somehow John convinced him. Then, some months later after things got cooled down, Tommy Karate whacked Willie Boy with 19 rounds supposedly as a favor to Gotti.
Can somebody clear this up cause I'm not sure whether Gotti okayed (ordered) this or was Tommy just going rat-patrol and doing him a favor hopefully to get on John's good side?