Six Flags Discovery Kingdom · operating · 2016
The Joker
100 ft · 55 mph
An RMC I-Box hybrid with steep drops and aggressive airtime in DC Universe.
Specifications
Ride profile
Scaled against Six Flags Discovery Kingdom's operating coasters
Park intensity
Height
100 ft
#7 of 10 at Six Flags Discovery Kingdom
Ride experience
Launches, airtime, layout style, and more
- Hybrid
Specs from sixflags.com
Learn more
Rocky Mountain Construction (RMC)
Hybrid conversions and custom I-box coasters with twisted, airtime-heavy layouts.
Rocky Mountain hybrid coasters
Steel track on reinvented wooden structures — steep, twisted, and often relentless.
Wooden vs steel coasters
Structure and maintenance differ, but the question for riders is feel — vibration, sound, and how the train moves.
Track compliance — why wood feels alive
Wood flexes; steel is stiffer — the same forces feel different on each structure.
History
Sourced timeline and background for The Joker.
Timeline
2016
The Joker opens
Log & review
Create a free account to track rides and share ratings with other enthusiasts.
Sign up to log ridesMore coasters at Six Flags Discovery Kingdom
More coasters in DC Universe and around Six Flags Discovery Kingdom.
More rides at Six Flags Discovery Kingdom
More in DC Universe and nearby — keep planning your Six Flags Discovery Kingdom day.
Sources & official links
We link out to parks, manufacturers, and the pages where facts and media come from.
- Six Flags Discovery Kingdom — official sitesixflags.com(opens in a new tab)
- Six Flags Discovery Kingdom on Coaster AtlasPark page
- Ride specifications sourcesixflags.com(opens in a new tab)
- Rocky Mountain Construction — manufacturerrmc-rides.com(opens in a new tab)