It first started when the gang were part of an intervention to help their friend Stuart quit drinking. Afterwards, they felt so good about helping Stuart that they created the banner and held another intervention; this time for Marshall, to convince him to take off the hat he had been wearing for two weeks. This went on for a while, with each member of the gang having interventions for small things they didn't like about one another, until Barney accidentally burned the banner performing one of his fire magic tricks. (Intervention)
Months later, Ted stumbles across a second banner, and the gang reveals that they planned to hold an intervention for Ted, as they initially disapproved of him marrying Stella. However, once they got to know how great she was, they realized it was a stupid idea and so never used it. (Intervention)
About a year later, the banner is used again when the gang hold an intervention for Marshall, this time due to his constant use of charts and graphs. (Right Place, Right Time)
In early 2011, Ted calls the gang together for another intervention, banner included. He's not sure how to deal with his feelings for Zoey, considering she's married, and so asks them all to intervene and offer him advice. (Oh Honey)
In late 2012, Marshall, Lily and Ted hold and intervention for Robin because she is too obsessed with Barney. (The Over-Correction)
The following are a list of people the gang have held interventions for, and the reasons why.
- Barney: frequent magic tricks, specifically those involving fire.
- Barney: not taking off the old man suit.
- Barney: give his father a second chance and have dinner with him.
- Lily: use of fake British accents.
- Marshall: refusing to take off a hat.
- Marshall: constant use of charts.
- Robin: obsession with spray tans.
- Ted: marrying Stella before they knew each other.
- Ted: for his pretentious pronunciations; for example: "encyclopædia". (Not actually seen)
- Ted: love for a married woman.
- Stuart: for drinking. (This was done with other people)
- The Gang: for hosting too many interventions. (Called the "Intervention" intervention.)
- Barney: for his plan to move in with Quinn. (Called the Quin-ntervention.)
- Robin: her obsession with Barney
These are episodes where interventions and the intervention banner have made an appearance.
|Friends & Family||Robin Scherbatsky • Marshall Eriksen • Lily Aldrin • Barney Stinson • Alfred Mosby • Virginia Mosby • Heather Mosby • Stacy • Ted's kids • Tracy McConnell|
|Places||MacLaren's Pub • The Apartment • Wesleyan University • Gazzola's • Ted's house • Goliath National Bank • New GNB Headquarters • Ted's Architecture Class • Ted's Second apartment • Puzzles|
|Others||Yellow Umbrella • The Threeway Belt • Blue French Horn • Sensory Deprivator 5000 • Naked Lady Noise • Tuxedo Night • Tantrum • TurTurkeyKey • Intervention banner • Doctor X • Red Cowboy Boots • The Swords • Five Words • Mock Salutes • Classic Shmosby|
|Friends & Family||Lily Aldrin • Ted Mosby • Robin Scherbatsky • Barney Stinson • Marvin Eriksen Sr. • Judy Eriksen • Marvin Eriksen Jr. • Marcus Eriksen • Ashley Eriksen • Martin Eriksen • Marvin W. Eriksen • Daisy Eriksen • Unnamed Eriksen Child|
|Places||MacLaren's Pub • The Apartment • Wesleyan University • Goliath National Bank • Marshall and Lily's apartment • Marshall and Lily's house • AltruCell Corporation • Gazzola's • Honeywell & Cootes|
|Others||Ducky Tie (object) • The Eight Slaps • You Just Got Slapped • Mabel • Tantrum • Marshall versus the Machines • Best Night Ever • Intervention banner • Marshgammon • The Fish List • The Swords • Five Words • Big Fudge|
|Friends & Family||Marshall Eriksen • Ted Mosby • Robin Scherbatsky • Barney Stinson • Scooter • Mickey Aldrin • Janice Aldrin • Rita Aldrin • Morris Aldrin • Grandma Lois • Marvin W. Eriksen • Daisy Eriksen • Unnamed Eriksen Child|
|Places||MacLaren's Pub • Lily's Kindergarten • Wesleyan University • Marshall and Lily's apartment • Marshall and Lily's house • The Apartment • Lily's First apartment • Lily's Second apartment|
|Phrases||Where's the poop? • You sonuvabitch|
|Others||You're dead to me look • Marshpillow • Intervention banner • Lily's Bisexuality • Aldrin Justice (punishment)|
|Friends & Family||Ted Mosby • Lily Aldrin • Marshall Eriksen • Barney Stinson • Robin Scherbatsky Sr. • Katie Scherbatsky • Genevieve Scherbatsky|
|Places||MacLaren's Pub • The Apartment • Robin's apartment • Hoser Hut • Metro News 1 • Come On, Get Up New York! • World Wide News|
|Others||Blue French Horn • Robin Sparkles • Let's Go to the Mall • Sandcastles in the Sand (song) • Space Teens • The Beaver Song • P.S. I Love You (song) • Intervention banner • Truth Voice • Sir Scratchewan • Mock Salutes • The Locket (object)|