☼ Who is your favorite Fire type Gym leader?
My favorite is Blaine. 2nd is Flannery. We need more Fire gyms.
☼ According to you which Fire type has the best shiny sprite?
Rapidash.
☼ Do you think Fire types can be used defensively?
No, I don't think so. With weakness to Water and Ground attacks and Stealth Rock, Fire types' lifespans are limited. On the other hand, Fire is great offensively, being Super effective on Steel. It hits most of the commonly used Steel types SE, unlike Fighting and Ground, which are not SE against stuff like Skarmory and Scizor. So Fire is best used offensively.
New topic-
☼ If the legendary Fire types Ho-oh and Reshiram got into a fight, who'd win?
This one I don't really know. I can't decide.