Fizz immune to azir ult.

I think it's a matter of debating 's wall interaction among spell immunity from , , and invulnerable via 's invulnerable/untargetable active.

See my other reply, and Vlad's pool will ignore the initial effect of the wall.

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has nothing to do with trying to pass through 's wall. But testing it's effect of hitting Zhyona then using R, effect?

Zhonya's will ignore the knockback effect.

same as , but does it ignore the initial push?

Ignores the knockback, yeah.

's R is a wall but interacts differently compared to

can technically because she's not attempting to jump 's wall. Need testing.

She goes over with Rappel.

cannot pass through 's. Need testing.

His W makes him untargettable, so if he times it right, he can go through during the activation. Unsure if after, but I believe so.

cannot pass through 's wall, it's a dash not a blink, the 2nd activation is a blink however.

mb here

can because his invis is technically a blink ability. not tested but because she's not technically dashing through the wall but blinking behind it by reactivating E again.

Yeah, this is a blink.

technically a blink, can pass over it. while her R removes her from the map/targetability because she's dashing around dealing damage, her Q however will not.

Yep.

while his R actually teleports him to within melee range of his target, I'm not sure or tested the W shadow clone if the wall stops it or not.

Wall doesn't stop clone.

while he's not an unstoppable force, I do believe he's actually stopped by 's wall. E doesn't even go over it.

His R does though.

yes he does blink over the wall, it's a blink. yes her E is indeed a blink, you got that one right. I'm not sold on this one because he does dash around yet he's not technically there....like .

His Q will work to both dodge the effects and to hit behind the wall.

yes he does get over it, E is a blink. I'm gonna say yes, since he teleports to his targets location and it's pretty much a blink. though his E dash does not, his R does because he teleports to the location of the knocked up target(s). no though he may be untargetable he's still restricted to confines of interacting to it like other walls, cannot pass under them. Also note though he's untargetable he still takes any form of ticking damage, and I wanna say same with an AoE of some sort. Needs testing.

His pool avoids the wall but does not go over it.

not totally sure how it interacts with shields that prevent any kind of CC. Needs testing

Prevents.

see

Prevents.

like for his spell shield though I am not sure how his R would interact because he technically rushes at them and does go over walls, 's wall interacts differently. Need testing.

Prevents and his R goes over it.

Your most guarenteed way across 's wall is this spell: . 100% of the time less you manage to mess up a flash. Oops! :P

Other champions I'm curious about, interacting with 's wall.

Red/Rioter to fill in or anyone who's tested effect of pulling enemy through allied 's wall? the use of her R with 's wall?

Dunno here.

using E I imagine gets under the wall, does it? What bout R and colliding with the wall? How does that work?

Rek'sai's ult makes her untargettable and can't be blocked by anything. (I have personally tested this one against an Azir wall). You can also smite while ulting :D