Cartoon Network's 20th Birthday was the celebration of the first 20 years of Cartoon Network 1992-2012.
Ami And Yumi Edit
On the Cartoon Network 20th Birthday poster Ami and Yumi made their apperances from the last 6 years they were on TV.
Hi Hi Puffy Ami YumiEdit
It is unknown if Hi Hi Puffy Ami Yumi was shown during the Cartoon Network 20th Birthday era.