The Foot Technicians first appear in the 2003 cartoon series episode Attack of the Mousers where two technicians present the mousers optics showing the turtles. They are all seen wearing the same uniform. They have aneye band which covers their eyes but have 4 optics lenses. The eye band has 2 wires connecting to a storage device placed at the back of their waist. They later appeared in Darkness on the Edge of Town. Two of them picked up Chrell's powered armour from the East River after fighting the turtles using hand held laser.
They also appeared later in Notes from the Underground, Part 1, as part of archive log video showing their genetics experiment. Later, they appeared in Rogue in the House, Part 1 setting up and operating the lab in the Kuraiyama and Exodus, Part 1. In Season 4, they were shown in Scion of the Shredder and Prodigal Son , New World Order, Part 1 (manning the Shrednaut).