How I Met Your Mother focused on the core group of friends but there were many side characters who had surprising hero roles in the series.
HIMYM: 10 Low-Key Villains On The Show
How I Met Your Mother: 10 Low-Key Heroes On The Show
How I Met Your Mother never jumped the shark — it was always terrible!
How I Met Your Mother Hooked (TV Episode 2010) - IMDb
Will 'How I Met Your Mother' End In Tragedy? – IndieWire
How I Met Your Mother: Season 1
How I Met Your Mother (TV Series 2005–2014) - Episode list - IMDb
How I Met Your Mother: The 10 Worst Things The Gang Did To Each Other
List of How I Met Your Mother characters - Wikipedia
How I Met Your Mother: The Main Characters, Ranked From Worst To Best By Character Arc
How I Met Your Mother: The Worst Things Each Main Character Has Done
How I Met Your Mother: 10 Characters Who Appear In The Most Episodes Of The Series
How I Met Your Mother: 10 Low-Key Heroes On The Show