Complex sentence: Later he fought the Double Riders on roller coaster and was defeated by their Rider Double Chop when turning invisible after weakened, reverts to his human form cursing the Double Rider and exploded.
Split into simpler sentences: Later he fought the Double Riders on a roller coaster and was defeated by their Rider Double Chop when turning invisible. Weakened, he reverted to his human form cursing the Double Rider and exploded.