Note: Due to a personal preference and fondness for the original English voice cast, I refuse to acknowledge the Pokémon dub after season 8/movie 8. I won't list the dub titles for anything after that.
Voice Actor: Katsuyuki Konishi / 小西克幸
The Legend of Thunder!
Raikou: Legend of Thunder
A group of Team Rocket are bent on capturing the elusive Raikou, through any means necessary. However, a group of three Johto trainers and Eusine come to its rescue.
Mesase Pokémon Master!, Ready Go!, ~ Pokémon Symphonic Medley ~
#180: Houndoom's Special Delivery
Hellga and Togepi!
Houndoom and Togepi briefly see a Raikou, before it promptly flees.
#227: For Ho-oh The Bells Toll
Suikun and Minaki! The Legend of Houou!!
Eusine and Morty tell of the legend of the Three Beasts and Ho-oh.
AG#040: Watt's With Wattson?
Kinsetsu Gym! Tessen's Electric Shock Battle!!
Mauville Gym Leader Wattson owns several Raikoubots.
DP#137: Marill · Piplup · Elekid!!
Maril · Pochama · Elekid!!
Piplup protects Dawn from a Raikou in a nightmare.