Budgie is a small blue helicopter with a big yellow cap marked "B" at the front and covering his entire airframe. He lives and works at Harefield Airfield, and seems to be best friends with Pippa. He can be cheeky and troublesome, but he works hard too, and continuously tries to please Lionel. He will also bravely come to the assistance of people in danger. He hates going through the heli-wash, and avoids doing so whenever he can. A white teddy bear named Snowy can almost always be seen carried in a pocket on Budgie's starboard side (however he seems to talk to him in most episodes, even though he can't talk) (although in "Budgie Takes a Catch", this was changed to two lollipops instead).
As the title character of the show, Budgie has appeared in all of the episodes of both seasons.
Budgie has appeared to be based on a Bell 206. This type of helicopter is a multipurpose utility helicopter, which has seen various usage in civilian and military roles. This is reflected in the fact that Budgie has performed various tasks including important deliveries and rescue missions.