Sometimes it is debatable whether a main character died or if it was just a Generic Tree Friend due to their similar appearances and when the main character's features become indistinguishable. Lumpy, Cro-Marmot, and Mr. Pickles are the only three main characters who cannot be mistaken for Generic Tree Friends due to their starkly different appearances.
Because of his appearance, Toothy is often mistaken for a Generic Tree Friend, especially if he is in the distance or driving a vehicle when he dies.
The only time Generic Tree Friends appear onscreen in the TV series is in the episode Mime to Five.
Mime and Fliqpy are the only characters to directly acknowledge a Generic Tree Friend, as seen when the former tries to cheer up a burnt generic tree friend with a balloon animal and the latter is seen killing another in Class Act.
In early episodes, the Generic Tree Friends were colored. Furthermore, these colors were various shades of light coues, pinks and yellows. In later episodes (including current ones), their coloring has changed to a very dark shade of purple or black, depending on the episode.