Old Oscar is an old green biplane.
Old Oscar is a spry, crusty old biplane from a bygone era, the earliest days of aviation. In his youth, he was a brainstorming biplane who performed stunt tricks with air circus pilots that used to tour the countryside. He had a brief stint in silent movies and air shows as a stunt plane, before he ended up in Tarrytown as one of the first planes in the EZ Airlines fleet. Like a favorite grandfather, he is a great storyteller who chips in important lessons to the young planes as they find their way in the skies. He's voiced by Chuck Morgan in the series installment.
- Whenever Oscar was present in the Model Series, the trombone was played, but in the main series, the bassoon was played.