Kiddee Koaster, Junior steel roller coaster at Six Flags Fiesta Texas, United States.

Kiddee Koaster is a junior roller coaster at Six Flags Fiesta Texas that winds through an oval-shaped track with gentle slopes and turns. The ride uses straightforward engineering without inversions, keeping the experience smooth and manageable for younger riders.

The ride opened with Six Flags Fiesta Texas on March 14, 1992, as Pied Piper. It became Rollschuhcoaster in 1999, was refurbished as Romp Bomp A Stomp for the Wiggles World expansion in 2008, and was renamed Kiddie Koaster in late 2010 after Six Flags dropped licensed brands. It took the name Streamliner Coaster in 2020 and was rethemed to Batgirl in 2024.

This entry-level roller coaster introduces young visitors to thrill rides while maintaining safety standards through specific height requirements and trained personnel.

The coaster moves groups of riders through regularly spaced cycles throughout the day at a steady pace. It works well for families looking for a gentle first coaster experience without long waits or intense sensations.

Manufactured by Dutch company Vekoma, this compact version of their Roller Skater model operates without inversions to ensure comfort for first-time riders.