Raikou from XY8!
The official Japanese Pokemon Twitter has revealed Raikou from Red Flash. Thanks goes to Hannes S. for the translation!
Raikou – Lightning – HP120
Ability: Shining Body
If there are any [L] Energy attached to this Pokemon, any damage done to this Pokemon is reduced by 20.
[C][C][C] Thunder Lance: 50+ damage. This attack does 20 more damage for each [L] Energy attached to this Pokemon.
Weakness: Fighting (x2)
Resistance: Metal (-20)