The first season of The Backyardigans aired from October 11, 2004, to June 19, 2006 in the US, and September 11, 2004, to August 4, 2005 in Canada. It contains 20 episodes.
Austin made his debut this season. The other major characters had appeared six years prior in "Me and My Friends," an unaired live-action pilot that launched the series.
Uniqua, Pablo, and Tyrone appear in all 20 episodes.
This is the first of two seasons not to have snack time at Austin's House, the second being Season 3.
In the season 1 intro, when Tasha sings her "And we'll maybe dance along" line, her mouth is frozen. This is later fixed starting from the Season 2 intro.
There are differences between this season and the later seasons:
Pablo's skin is dark blue, Tasha has pale yellow skin, and Uniqua has darker pink skin. Their skin colors are changed to light blue, light yellow, and light pink, respectively, starting from Season 2.
Austin's skin is a darker purple, and his head is oval-shaped. Starting from Season 2, his head is a little rounder, and his skin is light purple.
When the title card appears, the house near the top right corner is green and later changed to yellow.
The Tasha's house is dark yellow, until season 2 is light yellow.
There is a running gag in nearly every episode where Pablo goes into a panic attack whenever something goes wrong while his friends try to calm him down.
