Shark Boy & Lava Girl
Shark Boy Aurelion Sol and Lava Girl Taliyah. Sol is a giant shark and his balls are tiny piranhas that open their mouths and bite when they hit a champion. Taliyah is basically as it sounds, just lava rocks and stuff.
Shark Boy Sol:
Sol's Q shoots out a big spinning whirlpool that grows in size by distance like the normal one, and inside the whirlpool you can see little shark fins circling.
Sol's W expands the range and speeds the piranhas like it normally would.
Sol's E, basically instead of a giant star dragon flying across the map it looks like a scene from Sharknado
Sol's R, shoots a giant burst of water and piranhas in front of him knocking enemies to the outer range of his piranhas.
Lava Girl Taliyah:
Taliyah's Q shoots molten obsidian rocks, and leaves the ground looking something like Infernal Nasus' E
Taliyah's W summons a small volcano that spew a burst of lava knocking the enemy champion in whichever way the player decides
Taliyah's E summons little obsidian rocks that will sit on the ground and then burst into lava when stepped on or timed out
Taliyah's R, she rides a giant wall of molten obsidian rock.