Kings chain throws are mean, but its easy to break early on. Each extension is done by just pressing 1 or 2 (unless you do the power up input as well), but they are all broken by 1 or 2. 50/50 chance on each continuation. So if anybody knows and tries to break it, there is a 1 in 32 chance to achieve the full grab combo. It is definitely intimidating when you first encounter it, but it isn't actually as bad as getting juggled for that amount of damage, as you can't escape the juggle unless they drop the combo, but you have 5-6 attempts to stop the grab chains