The Boy Detective Fails was created in 2006.
When Engineering Fails was created in 1998.
When Gravity Fails was created in 1987-01.
When Technology Fails was created in 1994-01.
If Marriage Fails was created in 1925-08.
Mickey the Detective was created in 1928.
Detective Chimp was created in 1952.
Darkworld Detective was created in 1982.
Detective Quiz was created in 1952.
The Metatemporal Detective was created in 2007.
True Detective was created in 1950.
William the Detective was created in 1935.
The Last Detective was created in 2003.