Luigi, Mario and sonic Wiki

Luigi or Luigi Mario (in the films) is Mario's sidekick brother in most Mario Games. He usually accompanies him on many dangerous adventures and has a rivalry with Sonic and Tails. He is the younger twin brother and usually is scared of Boos. He is actually known as the plumber who's done most adventures that Mario does and also his own adventures like Luigi's Mansion and the sequel, Luigi's Mansion 2. After a failure of Donkey Kong 3, Nintendo decided to put Mario and Luigi together in a series

Mario vs Red Luigi (Connections in comments) : r/DeathBattleMatchups

Mario And Luigi Meet Sonic The Hedgehog by Hunicrio on DeviantArt

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Luigi, Mario & Sonic Games Wiki

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Luigi, Mario and Sonic at the Olympic Games Wiki

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