Reptilian (formerly Avalanche) is a godsend for big people, and you can still have someone else in the car with you as long as they're smallish and don't mind cozying with you lol. Berserker is no problem either. It can be a bit tight, but even if you're big, you'll fit.

Kings Dominion offers several attractions that are accommodating to "plus-size" or larger guests, though the fit often depends on body proportions (height vs. waist vs. chest). Dominator is widely cited as the most "fat-friendly" coaster because it features specialized rows (typically rows 4 and 5) with double-buckle restraints designed for larger chests and shoulders. Reptilian (the bobsled coaster) is also very accommodating because it uses a single, shared lap bar for each car rather than individual tight restraints. Intimidator 305 uses a flexible overhead vest system that many larger riders find more forgiving than rigid lap bars. Other accessible options include the Shenandoah Lumber Company (log flume), Anaconda, and Berserker. Conversely, Twisted Timbers and Flight of Fear are notoriously difficult for larger guests due to their very restrictive lap bars and narrow seat buckets. Savvy visitors should look for the "test seats" located at the entrance of major coasters to check their fit discreetly before entering the queue, and can often request "seat 3 or 23" on rides like Delirium for a more comfortable experience.