Terriermon was one of the big digimon from the Tamers saga, but can he handle the most recognized Pokemon of all time!? Pikachu is extremely powerful, but his main trump card is his speed. When he’s using Quick Attack or Volt Tackle, he’s hard to stop. Terriermon is much bigger in his mega form, but Pikachu’s speed/power combo will wear him down. Pikachu wins.