开心一笑，酒吧老板Carl到底姓什么。

Carl MacLaren 哈哈！

It is possible that Carl does own MacLaren's Pub, as his last name is MacLaren.
Fromhttp://how-i-met-your-mother.wikia.com/wiki/Carl_MacLaren

怎样的话有点像脑筋急转弯

...Gunther CentralPerk么....

carl好cute的说 一直没换演员吗？

Carl the Bartender