Bildert is Rat's parody of Dilbert. Bildert was created by Rat when Rat decided to write a comic strip. Pig says that it is similar to Dilbert, but Rat denies it. Goat then says it is a blantant ripoff of Dilbert. When Zebra says the same, Rat explains the differences to Zebra, which include an angle difference in the tie.
Rat then was sued by Scott Adams for copying Dilbert, and Rat hired a lawyer who would explain the obvious differences, which included the fact the Dilbert had five lumps of hair, whereas Bildert had no more than four lumps of hair.