Our first L is the name of a title character: Lucifer Morningstar (Tom Ellis). He's an evil, terrible person, yet somehow charming in human form. Sure, it doesn't really make any sense for the devil to ever be a "nice guy," but Lucifer is somehow a fantastic show anyway.
Over on The 100, Lincoln is the first Grounder to teach the sky people that not all Grounders are horrible murderous fiends. Well, except for the part where he gets tortured after trying to kill Finn the first time he sees him. He's a good guy after that, although things haven't worked out so well for him recently.