|Date of Birth||April 1 (Age 9)|
|Role||Adopted son of Professor McClaine and W.I.N. 's Most Special Agent|
|Voice Actor||Len Jones|
A normal, adventure-loving schoolboy, Joe was the adopted son of brilliant electronics engineer, Professor Ian McClaine, creator of BIG RAT (Brain Impulse Galavanoscope Record and Transfer), a sophisticated device which recorded the brain patterns of one person and transferred them to another.
When the World Intelligence Network (W.I.N.) found out about the BIG RAT, they bought it and made Joe their most special agent giving him the code name of Joe 90.
During his missions, Joe would sit in the RAT trap and gain the brain pattern of a certain individual to give him the skills he needed to complete them.
He was also given a special pair of glasses with hidden built in electrodes to store the selected brain impulses as well as a special brief case disguised as an ordinary school case, but had hidden compartments where he stored his glasses, badge, ID, handgun with silencer and clips, transmitter and selected reports.