At one point in time, she was my favorite character, but that's because I had not watched many shows. Lily is awesome. She is super underrated and by far the funniest character on the show. Her and Robin's friendship is iconic and her relationship with Marshall is GOALS. Lily has no problem being sneaky, she sabotages all of Ted's relationships <3 and her iconic "you son of a bitch" line. Lily is just great throughout the entire series and I love her sooooooo much. She has so many great one-liners.