The original logo for what was then known as Nicktoons TV, featured orange silhouettes of Nickelodeon animated characters (a silhouette of SpongeBob SquarePants is seen in this logo) with the then-logotype for Nickelodeon printed within the silhouette as "Nick" and the "Toons TV" lettering underneath.
Nicktoons (first era)
On June 16, 2003, the channel was renamed Nicktoons. This change was believed to be the golden years of Nicktoons by fans due to the channel featuring many classic Nickelodeon programming on it during its time and the logo being a homage on the original Nickelodeon logo.
On September 23, 2005, Nicktoons introduced a new look and became Nicktoons Network. The logo was designed in house. Exopolis created the new on-air package. This logo has a globe shown with orange slime on it. Beginning with this era, Nicktoons would begin to feature both classic and original programming.
Nicktoons (second era)
As part of Nickelodeon's rebranding effort, all of its channels were rebranded on September 28, 2009. Nicktoons Network reverted back to its old name used from 2003 to 2005. The "TOONS" part can be red, blue, silver/grey, yellow and green.