A short lime-green spider with darker limbs. Despite being a spider, he also has two small antennas. He has blue eyes. Gerbo is a dimwitted and childlike spider who is best friends with Bugbo. He often has fairly creative ideas, but they're quickly shut down by Bugbo in favor of his own plans, which Gerbo goes along with anyway. He is shown to have a caring heart for others and doesn't like it when things are unfair. His other friends are Gradient Joe and Hoppo. Gradient Joe doesn't talk much.