couple added features aside, the Fallout show's power armor is remarkably faithful to the suits found in the Fallout games: big, clumsy, ridiculous. They could've wound up looking very different, though, because according to Fallout show production designer Howard Cummings, Bethesda never insisted on adherence to the games...
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Fallout show creators decided on their own to faithfully replicate the iconic power armor: 'Bethesda didn't know what we were doing'
Source: PC Gamer (opens in a new tab)