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95 Michael J. Pollard as Mister Mxyzptlk (Superboy series)
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101 Vincent Price as Egghead (1960s Batman series)
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28 Mark Hamill as the Trickster (1990s Flash series)
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27 Corinne Bohrer as Prank (1990s Flash series)
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105 Corinne Bohrer as Prank (2010s Flash series)
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35 Hugo Strange, Gotham
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108 Deadshot, Arrow
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74 Catwoman, Batman Returns
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73 Doctor Sivana, Shazam movie
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72 Brainiac, Smallville
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75 Lex Luthor, Supergirl
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85 Lillian Luthor, Supergirl
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4 Solomon Grundy (aka Butch), Gotham
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5 Lex Luthor, Smallville
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46 Nuclear Man, Superman IV
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22 Malcolm Merlyn (aka Ra's Al Ghul), Arrow and Legends of Tomorrow
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58 Scarecrow, Gotham
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57 Deathstroke, Arrow
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76 Selina Kyle (Catwoman), Gotham
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53 Catwoman, Dark Knight Rises
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63 Bane, Dark Knight Rises
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39 Bane, Batman and Robin (for anyone unsure, he's the one at the back)
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100 Bane, Gotham
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64 Scarecrow, Batman Begins and Dark Knight Rises
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112 Enchantress, Suicide Squad
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107 Mr Freeze, 1960s Batman
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99 Zod, Smallville
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80 Prometheus (Adrian Chase), Arrow
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9 Lex Luthor, Batman v Superman
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All new answers correct, list updated. While not the influence Paul Dini normally cites, I wonder if at least subconsciously original Prank influenced Harley Quinn. They're similar in a lot of ways.