Spider-Man S03E06 - Knight Must Fall/The Devious Dr. Dumpty

Spidey jousts with a motorcycle-riding knight in armor who is robbing theatre box offices, armored trucks, and museum officials receiving a medieval artifact. 

 Dr. Dumpty, a corpulent jewel thief, attacks a parade with knock-out gas released from balloons, and he and his thugs, wearing gas masks, steal the jewels of actress Rachele Wells and abscond in a hot air balloon.