|But behind them all, there's another tape which reads "Love Kitties".|
Adventure Comics vol.1 No.300 (September 1962)
“Great Scott! Look at these Hate Tapes…”
The Legion is bedeviled by URTHLO, a seemingly unstoppable super-being who hides his identity behind a solid-lead fright mask. Only defeating the villain by means of a genuine Hail Mary pass (they liberate doomed Legionnaire Mon-El from The Phantom Zone long enough to smash the baddie, but barely have time to return him to his exile before a fatal lead poisoning claims his life!), the Legion discovers that Urthlo is a robot duplicate of the adult Lex Luthor, sent through time to destroy his greatest enemy and his super-hero pals and powered by “Hate Tapes” – discs which read “Hate Superboy”, “Hate Legion of Super-Heroes” and merely “Hate Hate Hate.” Well, you know what they say about Haters.
Wait a minute – URTHLO spells LUTHOR! WOW! He IS a genius!