X-5, the third member of Betty's crew, is a roughly rectangular, yellow, hovering robot. He tends to spout too much information at inopportune times and takes things exceptionally seriously, which usually grates on Sparky's nerves. The two of them have a grudgingly respectful working relationship. Though it is implied that he is an outdated robot model, newer model robots have tended to be less reliable. In the third season, he also becomes an inventor, inventing new gadgets that are used by Betty on her missions. When he visits Betty's home, he tries to "improve" upon the kitchen appliances in Betty's house, thinking that this technology (like most technology on Earth) as being primitive.

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