• Heimerdinger is a portmanteau of J. Robert Oppenheimer and Erwin Schrödinger's last names.
    • His given name Cecil comes from Caecilius, a Roman surname, from caecus "blind".
  • Heimerdinger's alternate/old walk is referred to as 'derpy'.
    • Using emotes will make Heimerdinger alternate between his regular walk and his 'derpy' walk.
  • While UPGRADE!!!.png UPGRADE!!! is active Heimerdinger gains a cosmetic buff that reads 'Harder, Better, Faster, Stronger'.
  • If Heimerdinger scores a Pentakill he will gain the cosmetic buff Eureka! Eureka!
    • This buff references Archimedes' sudden revelation, only in Heimerdinger's case his own came after the mass murder of the enemy team.
  • Heimerdinger is the sixth champion to have more than four abilities, the others being Elise Elise, Gnar Gnar, Jayce Jayce, Karma Karma, Lee Sin Lee Sin, and Nidalee Nidalee.


  • "For great science" references Engrish.
  • "Back, you dirty ape, back!" references Planet of the Apes.
  • "Raise your what?" references ヽ༼ຈل͜ຈ༽ノ raise your dongers by Michael 'Imaqtpie' Santana from Team Dignitas.
  • "The probability of your continued existence is rapidly approaching zero" was used in Rumble Rumble's League Judgement.
  • "Not enough variables... hmm... not nearly enough variables" references Mordin Solus from Mass Effect 2 ("Too many variables")
  • "42... there's just something about that number" and "Aha, 42, I knew it! Now--- er, what was the question again?" reference The Hitchhiker's Guide to the Galaxy.
  • In Brazilian localization Heimerdinger has a joke referencing El Chavo del Ocho.
  • "I prefer a battle of wits, but you're unarmed!" references William Shakespeare ("I would challenge you to a battle of wits, but I see you are unarmed!")


HeimerdingerSquare.png Classic Heimerdinger [S|L]
HeimerdingerSquare.png Alien Invader Heimerdinger [S|L]
HeimerdingerSquare.png Blast Zone Heimerdinger [S|L]
  • He is basically his Classic self but covered in soot after something blew up on his face.
  • He appears when the game's store is under maintenance.
HeimerdingerSquare.png Piltover Customs Heimerdinger [S|L]
HeimerdingerSquare.png Hazmat Heimerdinger [S|L]
  • He is wearing a hazmat suit and holding a bottle of radioactive liquid.
  • A sign featuring Rumble Rumble not being allowed can be seen to his left.
  • He might be referencing Breaking Bad and/or Fallout.


  • Heimerdinger created Master Yi Master Yi's Seven Lenses of Insight [1] as well as Corki Corki's Reconnaissance Operations Front-Line Copter (ROFL Copter)
  • Heimerdinger is seen as a role model by Ziggs Ziggs and as a sellout by Rumble Rumble.
  • Piltover recognizes Heimerdinger's contributions to technological advancement and techmaturgical research.