>>49165157>MUH HORNThat was 4Kids' fault. The original script was simply Ash cheering Pikachu on, and as such the intended result was consistent with Pikachu's ability to disregard Ground Immunity, a quirk the anime gradually phased out starting with Johto because everyone involved knew that TPC was going to be breathing down their necks to live up to a more professional standard, especially once executive meddling fucked up Johto's intended Celebi arc.
>LIGHTNING ARMORA dramatic interpretation of Swellow's Guts Ability, which was chosen to be displayed the way it was in order to put emphasis on the anime's vision of double battles being an effort of having the trainer's two Pokemon cooperate with each other in full to maximize strategic capabilities.