쉔궁으로모텔감Unstoppable and CC immunity are actually different. You're only immune to CC while the Unstoppable status is active, but once it wears off, the CC duration that's left will still apply.
The root lasts for 1 second, so if you hit him when there's only 0.5 seconds of Unstoppable left, he'll be rooted for the remaining 0.5 seconds after the dash ends.
I don't think that's right..
Skillshots like Varus ult won't even affect him while he's unstoppable, right?
For point-and-click abilities though
If the timing is perfect, CC can land in rare cases
Sometimes a projectile hits right in the middle of the unstoppable frames
As for things like Polymorph
If you use it right in front of Malphite just before he ults
He might get transformed mid-dash and just plop down instead of hitting with a bang
If you hover over a skill and hold Shift, any skill that says "This skill knocks down enemies"—like Ahri's Charm or Ornn's W—will still apply after the Unstoppable state ends, even if you hit them while they're Unstoppable, as far as I know.
what happens if varus ults malphite while he's flying in with his ult? wouldn't it get blocked?
isn't he unstoppable
More
The root lasts for 1 second, so if you hit him when there's only 0.5 seconds of Unstoppable left, he'll be rooted for the remaining 0.5 seconds after the dash ends.
More
If you hover over a skill and hold Shift, any skill that says "This skill knocks down enemies"—like Ahri's Charm or Ornn's W—will still apply after the Unstoppable state ends, even if you hit them while they're Unstoppable, as far as I know.
More