How I Met Your Father’s cameos can finally confirm How I Met Your Mother’s biggest theory about whether Ted’s descriptions of Barney were true to the character.

So far, four HIMYM characters have made cameos on How I Met Your Father, including The Captain, Becky, Carl the bartender, and Robin Scherbatsky.

HIMYM’s Barney Stinson has long been speculated as a perfect crossover character for the two shows, but his appearance would also have the added benefit of confirming a major theory about Ted’s storytelling.

Barney Stinson actor Neil Patrick Harris has long been a fan of this HIMYM theory, as he believes the character isn’t half as bad as Ted made him seem.