Since Raichu can deliver a very solid 140 damage via Thunderbolt, he's used in the Pikachu ex/Zebstrika deck as insurance in case you end up requiring a bigger offensive blow at any given point ...

When Pikachu is not perfecting his Thunderbolt on unsuspecting Pokémon, he’s actually practicing guitar. The beloved Pokémon absolutely killed a guitar solo — and other performances ...