Tarantula Riding only takes place once in season 3 and twice in season 4. William and Aelita have both ridden a Tarantula. Aelita rode on a Tarantula in Lyoko Minus One when the Tarantula was taking her to the Way Tower of the Forest Sector (while under X.A.N.A.'s control). Then in season 4, X.A.N.A. William rode a Tarantula twice; the first in the episode Lab Rat and the second in Dog Day Afternoon.