In the Mirage Comics the Foot Soldiers were loyal servants to Oroku Saki, and later Karai. Each Foot Soldier was armed with a katana/spear/kama/nunchaku/fist dagger/knife/submachine gun/etc. and dressed in the same garb: a black, blue, red, grey, brown, or pink Tunic, black, blue, grey, purple, brown, or pink head mask with eye protectors. Leonardo commentated that their skills were good, but no match for the turtles.
The Foot Soldiers and the Turtles fought several more times until Saki was finally killed. Afterwards, the Foot fell into various splinter groups and were fighting over control of New York City until Karai, the leader of the Foot in Japan, came back, killed each one of the 4 Foot Elites and regained control of the Foot.
In Volume 4, the Foot gained a security contract with the Utroms, who were visiting Earth on a peaceful diplomatic course. Although Karai had no problems with the Turtles and some, if not, most of the Foot apathetic to the matter, one Foot Soldier named Cha Ocho, had a strong dislike for the Turtles.
The Foot were also attacked by mysterious warriors at this time, in which Leonardo was helping the Foot. They also developed an interest in the occult and distributing books of dark arts.