The Leppard Bicycle Prototype first appears in Volume 2 as an extravagant, hand-crafted two-wheeler whose handlebar-integrated bell and natural-rubber tires mark it as a technological marvel far ahead of its era. Across the series it evolves from a mere status symbol into a narrative device that embodies the tension between steam-era ingenuity and the encroaching mysticism of the Beyonder world. Its repeated cameos underscore the widening gulf between mundane innovation and the supernatural forces that threaten to render such inventions obsolete.

The Leppard Bicycle Prototype first appears in Volume 2 as an extravagant, hand-crafted two-wheeler whose handlebar-integrated bell and natural-rubber tires mark it as a technological marvel far ahead of its era. Across the series it evolves from a mere status symbol into a narrative device that embodies the tension between steam-era ingenuity and the encroaching mysticism of the Beyonder world. Its repeated cameos underscore the widening gulf between mundane innovation and the supernatural forces that threaten to render such inventions obsolete.