So can be any other element. It depends on the limits of the manipulation.
Earth
Bentley Morales
James Robinson
Nicholas Carter
Ice
Levi Garcia
is he giving someone a heart attack while his animal friends look on in horror?
Brayden James
Except it's complete bogus that fire gets lightning in Avatar.
Jason Peterson
SHEER HEART ATTACK
NO WEAKNESS
Carter Lewis
Meat > Metal > Smoke > Plastic > Sugar
Nathaniel Taylor
Then Asian Henry Rollins gonna make your life hell
Thomas Thomas
Every element gets a crazy ass secondary element though, two if you want to get technical about it.
Earth: Metal, lava
Water: Ice, Blood
Fire: Blue Flame, Lightning, EXPLOSIONS(That one was unique to one lunatic though)
Air: I actually don't remember if air gets a secondary or not, but it's crazy powerful anyway so who cares
Jack Green
The best and cutest planeswalker, and her entire personality is literally just "I like fire."