The Nickelodeon logo has undergone numerous changes throughout the Network's history.
The original logo was a sphere with multicolored balloon lettering.
The nineties were marked by Nickelodeon's iconic splat logo, representing Nick's theme of messiness.
Another notable Nick logo is the blimp. This shape is also used for the trophies in the Kids Choice Awards
For many years, the Nick logo took on random shapes, most notably in several station IDs in the 90s.
Today, the logo is simply the name of the network in a modern font in orange and purple. It was changed from the splat in reflection of changing themes of the network.