Some of the Thunderbird mech pay tribute to the original Thunderbirds (1965) vehicles: Thunderbird 2 (TB-2) is a cargo hauler, identical to the original TB-2 but coloured blue instead of green and storing its vehicles inside its cargo bay rather than in hangar podsThunderbird 4 is a yellow submarine like the original TB-4, but larger in scaleThunderbirds 5 and 15 are based on the Mole, the pod vehicle seen in the original seriesand Thunderbird 6, like the original TB-5, is a massive space station.