"I just curl into a ball and sing "Hot Cross Buns.""
- Phillip to BillPhillip Pope John XXIII (the 23rd) Bonfiglio is Bill's best friend and the son of Babe Bonfiglio. He is voiced by Debi Derryberry.
Phillip first appeared in The Bleedin' in Sweden, asking Frank if Bill could come out and play causing Frank to tell him to "get the fu*k out of here."
He was planning on going trick-or-treating with Bill dressed as Nickel and Pickle. The two were too scared to go however when Jimmy and his cronies threatened to beat them up if they did. Later in the night, Bill and Phillip decide to go out anyways, but Phillip creeps quietly back into his house as he sees the bullies instantly assault Bill just like they said they would.
Phillip is very similar to Bill in that they are both wimpy and a bit on the geeky side. Phillip has a constant whine to his voice and does not seem to be as smart as Bill. Phillip also seems to be a hanger-on to Bill. Phillip usually calls Bill "Billy".
It's revealed in "Bill Murphy's Day Off" that Phillip has asthma. He also admits he touched the soft spot on his younger brother's head when he was a baby, thinking it is why he cannot read in F is for Halloween. It is established in Season 2 that his father is Babe.
In Fight Night, Phillip tells Bill he is allergic to cheese, wheat, tomatoes, and water.
It's shown that Phillip most likely has severe and subtle psychological issues, leaving him being unable to vent his anger and frustrations properly. Phillip reveals his collection of drawings to Bill that depicts dismemberments and graphic deaths of those who anger him, he refers to this as his "kill book". A large amount of those drawings are dedicated to Jimmy. When Maureen learns of the kill book, she becomes impressed with Phillip.
Phillip's psychological issues become public for the first time when he assaults Hobo Jojo on live TV for cheating Maureen on the ring toss game.
- The Bleedin' in Sweden
- F is for Halloween
- Bill Murphy's Day Off
- Heavy Sledding
- Breaking Bill
- This Is Not Good
- Fight Night
- F Is For Fixing It
- The Stinger
- Mr. Murphy's Wild Ride
- Battle Of The Sexes
- Punch Drunk
- Summer Vacation
- It's In His Blood
- Frank The Father
- Bill Murphy's Night Off
- "Hi Mr. Murphy. Can Billy come out and play?"
- "I feel dirty!" (Runs away cackling)
- "Doobie" (Giggles, thinking that it has to do with sex)