Johnny Test first episode was in September 17, 2005 and their last episode was in December 25, 2014.
Johnny Test is created by Scott Fellows. So it's like the creator of Johnny Test also copied the ideas of Charlie Brown and the is when Lucy picks up the foot Ball and Charlie Brown Flops on his Back.
Van Partible is the creator of Johnny Bravo and Johnny Bravo's first episode was in
March 26, 1995 and their last episode was in August 27, 2004.
Their was an old Cartoon That my Father used to watch it's called Jonny Quest and his first episode was in September 18, 1964 their last episode was in March 11, 1965.
Jonny Quest is the oldest cartoon out of both of Johnny Bravo and Johnny Test. Johnny Test is the newest.
Johnny Bravo and Johnny Test are probably off the air probably because they copied other creators ideas of their cartoons. Johnny Test I read he has a crush on this girl name Sissy Blakely. Susan Test and Mary Test are his sisters.