With the success of the MSM-03 Gogg and the MSM-04 Acguy mobile suits in the anime Mobile Suit Gundam, the MIP Company rolled out their own mass production amphibious mobile suit for the Principality of Zeon's Earthside forces. This line of amphibious mobile suit, known as the MSM-07 Z'Gok, became the most successful line used by the Zeonic forces during the One Year War.

The Z'Gok's success came from what it learned from the Gogg's and Acguy's errors. The Z'Gok was very agile and fast in and out of water. MIP also replaced the bulky ballast water tanks used by the Gogg and Acguy for cooling off the mobile suit for out of water operations with an air cooling fan system.

Notably, the weapon layouts were improved. Each of the Z'Gok's hands featured built-in mega particle cannons for easier and more precise aiming. Each hand also had three-claws which could be used to thrust into the Earth Federation's mobile suits or they could be used to smash things, as well. The Z'Gok also had six 240mm missile launchers built into the head with five rounds.

A few Z'Goks also underwent an improvement. These news Z'Goks, known as the MSM-07S Z'Gok Commander Types, used more powerful reactors. The improved Z'Goks S-Types also used slightly better armor construction materials. This made the S-Types lighter and increased their overall performance. The Zeon war ace Char Aznable, better known as the "Red Comet" to his foes, piloted a Commander Type Z'Gok in his traditional red-paint color scheme during the assault on the Earth Federation's Jaburo General HQ November 30, U.C. 0079.

Overall, the MSM-07 Z'Gok is considered the most successful amphibious mobile suit line produced by the Principality of Zeon during the One Year War. An experimental upgraded verison of the Z'Gok, the MSM-07E Z'Gok-E , was also produced in far fewer numbers than the normal and S-Type verisons.