1. Lesbian Robin..... Robin's doppleganger was not shown on Himym properley but it basically just looked like Robin with cropped hair and a dirty face she was carrying a baseball if I remember correctly and also a checked shirt and washed out jeans and old (maybe men's) trainers Barney, Lily, Ted , Marshall and Robin all saw lesbian Robin at the same time it seems according to Season 5 episode "Double Date" she was just casually walking along the street and spitting on the floor.
2. Moustache Marshall...... Again Marshall's Doppleganger was not shown properley on Himym it was just featured as...
Author's Note: I feel like this isn't very good... But there'll probably be more and hopefully it will get better. Anyway... The basic premise is that Dr. Horrible is the fifth doppleganger. Let me know what you think. Also, this will be posted on multiple spots. It will also appear in the NPH spot and the Barney Stinson spot.
Ted, Robin, Marshall and Lily were sitting watching a football game in Ted’s apartment. It was an uneventful Saturday afternoon when suddenly Barney rushed into the apartment.