This article belongs to in the Dimension 23
Dimension 23 (also known as Universe 23 and the [DJW 1] 23rd Dimension  ) is an alternate reality that closely parallels with  Ben's. It is the home dimension of Ben 23.
Dimension 23 has a different history than the main dimension. Dimension 23's
Bellwood is similar to Ben 10's but has the Mr. Gyro franchise replacing Mr. Smoothy.
Ben 23 found the "
Hero Watch" just like in the original series, but had to teach himself how to use it because his Max passed away before the Omnitrix arrived. Ben uses the Omnitrix for fame and fortune, and believes that all aliens are evil (except for his aliens) until his counterpart Ben Prime arrived in this dimension and changed all that.
Dimension 23 has a certain predisposition toward the color blue. Many objects are blue,
Ben 23's aliens have blue features, and the eyes of Ben 23 and Azmuth are blue. The Omnitrix is also blue.
This is similar to the main dimension's predisposition to green.
The out-of-universe reason for this is that the crew wanted to use the different color to represent the difference between Dimension 23 and the main dimension. [DJW 8] Dimension 23 may not be accurately named.
[DJW 9] Dimension 23's
Gwen is shy. Unlike her Prime Timeline counterpart, she is not an [DJW 10] Anodite. [DJW 11] Dimension 23's
Kevin works as a busboy in Mr. Gyro. [DJW 2] Dimension 23's
Jimmy Jones is just a little kid. [DJW 4] Dimension 23's
Billy Billions is on the Ben 23 Inc. board of directors and is growing up fine. [DJW 5] Dimension 23's
Dr. Animo is an evil scientist who works with vegetables and is named Dr. Vegeto.  [DJW 6] [DJW 7] Dimension 23's
Will Harangue is Ben 23's biggest fan.  Dimension 23's
Sandra Tennyson and Carl Tennyson are similar to their Prime Timeline counterparts but a little more lax and lazy because of their lifestyle. [DJW 3]
Nanochips such as Teeny-Weeny exist in Dimension 23 as a sapient species known as Nanomites with their own civilization in the galaxy. [DJW 12] Dimension 23 does not have a counterpart to
Malware or the [DJW 13] Nemetrix. [DJW 14] Much like the Prime Timeline, Dimension 23 has
Magic. [DJW 15] There are definitely alternate versions of other Cartoon Network characters living in Dimension 23. [DJW 16]