This is a gallery of everything that Luigi gets involved in throughout Luigi's Mansion, Luigi's Mansion: Dark Moon, Professor E. Gadd's Research Journal, Luigi's Mansion (3DS) and Luigi's Mansion 3.
Mario & Luigi: Dream Team - Wikipedia
Luigi's Mansion - SmashWiki, the Super Smash Bros. wiki
Luigi (SSB4) - SmashWiki, the Super Smash Bros. wiki
Luigi's Mansion 3 Guide: 9F Unnatural History Museum Walkthrough - IGN
Gallery:Luigi - Super Mario Wiki, the Mario encyclopedia
Luigi - Luigi's Mansion, 3DS Luigi's mansion, Luigi, Luigi's mansion art
Luigi's Mansion/Walkthrough — StrategyWiki
Luigi's Mansion 3 Image Gallery - Super Mario Wiki, the Mario encyclopedia
Mario, Luigi's Mansion Wiki