It first appears near the end of Ring of Fire Part 2, where The Hood and his men used it to escape from Kayo and Colonel Casey in Australia. In Unplugged, he escaped in it again in London after stealing the Universal Grid Codex (or so he thought). It was seen for the first time functioning as a submarine in Heist Society. This time, The Hood used it to blow up an underwater tunnel and steal Professor Moffat's Centurium 21. Luckily, FAB 1 and Thunderbird 4 damaged it before Thunderbird 1 hoisted it up to the surface, however The Hood fled in an escape pod before the sub was ripped apart.