Chase, also known as Pyro, is an American Gladiator (a parody of the real-life Gladiator Nitro). He dated Luann after she divorced Kirk. Their relationship ends when she's caught cheating on him with his best friend Gyro. Unfortunately, their relationship didn't work out. He was mentioned by Kirk in Milhouse of Sand and Fog ask what happend to him, Luann informed that she's not seeing him anymore, making them reunite each other and he was later appeared in Milhouse's daydreaming.
Appearances[]
Episode – "A Milhouse Divided" 
Episode – "Dumbbell Indemnity" - Episode – "The Principal and the Pauper"
- Episode – "Wild Barts Can't Be Broken"
- Episode – "Mom and Pop Art"
- Episode – "Beyond Blunderdome"
- Episode – "Alone Again, Natura-Diddily"
- Episode – "It's a Mad, Mad, Mad, Mad Marge"
- Episode – "A Tale of Two Springfields"
- Episode – "Day of the Jackanapes"
- Episode – "A Star Is Born-Again"
- Episode – "The Bart of War"
- Episode – "'Tis the Fifteenth Season"
- Episode – "Future-Drama"
- Episode – "Milhouse of Sand and Fog" (Milhouse's dream)
- – The Simpsons Movie
- Episode – "Dark Knight Court"
- Video game – The Simpsons: Tapped Out
| The Simpsons: Season Eight | ||||
| "Treehouse of Horror VII": | "You Only Move Twice": | "The Homer They Fall": | "Burns, Baby Burns": | "Bart After Dark": |
| Absent | Absent | Absent | Absent | Absent |
| "A Milhouse Divided": | "Lisa's Date with Density": | "Hurricane Neddy": | "El Viaje Misterioso de Nuestro Jomer (The Mysterious Voyage of Homer)": | "The Springfield Files": |
| Minor | Absent | Absent | Absent | Absent |
| "The Twisted World of Marge Simpson": | "Mountain of Madness": | "Simpsoncalifragilisticexpiala(Annoyed Grunt)cious": | "The Itchy & Scratchy & Poochie Show": | "Homer's Phobia": |
| Absent | Absent | Absent | Absent | Absent |
| "Brother from Another Series": | "My Sister, My Sitter": | "Homer vs. the Eighteenth Amendment": | "Grade School Confidential": | "The Canine Mutiny": |
| Absent | Absent | Absent | Absent | Absent |
| "The Old Man and the Lisa": | "In Marge We Trust": | "Homer's Enemy": | "The Simpsons Spin-Off Showcase": | "The Secret War of Lisa Simpson": |
| Absent | Absent | Absent | Absent | Absent |
| The Simpsons: Season Nine | ||||
| "The City of New York vs. Homer Simpson": | "The Principal and the Pauper": | "Lisa's Sax": | "Treehouse of Horror VIII": | "The Cartridge Family": |
| Absent | Cameo | Absent | Absent | Absent |
| "Bart Star": | "The Two Mrs. Nahasapeemapetilons": | "Lisa the Skeptic": | "Realty Bites": | "Miracle on Evergreen Terrace": |
| Absent | Cameo | Absent | Absent | Absent |
| "All Singing, All Dancing": | "Bart Carny": | "The Joy of Sect": | "Das Bus": | "The Last Temptation of Krust": |
| Absent | Absent | Cameo | Absent | Absent |
| "Dumbbell Indemnity": | "Lisa the Simpson": | "This Little Wiggy": | "Simpson Tide": | "The Trouble with Trillions": |
| Cameo | Absent | Absent | Absent | Absent |
| "Girly Edition": | "Trash of the Titans": | "King of the Hill": | "Lost Our Lisa": | "Natural Born Kissers": |
| Absent | Absent | Cameo | Absent | Absent |