Whoever designed Heimer you're an idiot & I hope you get fired

Heimerdinger was designed by Colt 'Ezreal' Hallam, who also designed the following champions:

Ahri, the Nine-Tailed Fox Amumu, the Sad Mummy Annie, the Dark Child (partly with Guinsoo and Zileas) Ashe, the Frost Archer (partly with Guinsoo and Zileas) Blitzcrank, the Great Steam Golem Caitlyn, the Sheriff of Piltover Cho'Gath, the Terror of the Void Ezreal, the Prodigal Explorer Heimerdinger, the Revered Inventor Irelia, the Will of the Blades Jarvan IV, the Exemplar of Demacia Jax, the Grandmaster at Arms Kassadin, the Void Walker Kog'Maw, the Mouth of the Abyss Malzahar, the Prophet of the Void Master Yi, the Wuju Bladesman Nasus, the Curator of the Sands Nocturne, the Eternal Nightmare Rammus, the Armordillo (partly with Coronach and Guinsoo) Ryze, the Rogue Mage (partly with Guinsoo) Singed, the Mad Chemist (partly with Guinsoo) Sion, the Undead Champion Sivir, the Battle Mistress (partly with Guinsoo) Sona, Maven of the Strings (partly with Guinsoo) Teemo, the Swift Scout Tristana, the Megling Gunner Vladimir, the Crimson Reaper Warwick, the Blood Hunter Zilean, the Chronokeeper

Source: "leagueoflegends.wikia.com/wiki/Ezreal_(person)"