Based on dragonflies, Tonbos loosely resemble the first variation of Poh-Bees. They have a thick green and black thorax with a pair of transparent wings on their backs, a black head with two red antennas and black eyes with orange sclera, four grey insectoid legs, and a thin abdomen with green plating on its tip
In Sonic the Hedgehog CD, Tonbos appear in Tidal Tempest. In gameplay, they simply fly back and both without using any attacks, making them one of the weakest enemies in the game. They can be easily defeated with the Spin Jump.
In the Bad Future, or occasionally the present timeframe of the Round, Tonbos appear as decayed, their armor having partially fallen off. In addition, they fly slower. Like every Badnik in the game, they are powered by Little Planet flower seeds, which will pop out of them when they are defeated.
"Tonbo" (トンボ,"Tonbo"?) is the Japanese word for "dragonfly".