User blog comment:Goddess of Despair/Comics vs Video Games Part 2: Pikachu vs Lockheed/@comment-4552610-20130217164738/@comment-24180428-20130217171441

Also, Pikachu's electric attacks don't do fire damage, they do electric damage. If the move does fire damage then it is going to be a fire type, a majority of those moves are electric. That and Pikachu has other non electric moves such as quick attack.