| Length | 2900 ft |
|---|---|
| Height | 100 ft |
| Drop | 90 ft |
| Speed | 55 mph |
| Inversions | 2 |
| Duration | 2:00 |
| Elements | Chain Lift Hill Loop Corkscrew |
| Arrangement | 2 trains with 6 cars per train. Riders are arranged 4 across in a single row for a total of 24 riders per train. |
|---|
| Former names | Apocalypse ( to ) |
|---|---|
| Former status | Operated from to |
| Relocations | Six Flags Great America as Iron Wolf Six Flags America as Firebird |
| Capacity | 1220 riders per hour |
| Designer | |
| Steel Fabricator |
| For the 2019 season the Apocalypse was given floorless, sit-down trains and the new Firebird name. The new sit-down trains are one row shorter then the prior stand-up trains. |
| The model above being listed as "Stand-Up Coaster" is intentional. rcdb make/model logic is based on how the ride was originally built. In contrast, the design field does reflect modifications made later on. |