User blog comment:Alanomaly/Alanomaly Rap Battles Season 2 - Historical Assassins vs Assassin's Creed/@comment-4721185-20151010000621/@comment-5101200-20151022162032

Pikachu and the Poke-Ball are hints for two separate battles.

Pikachu for the model royale.

Poke-Ball for a different battle.