His grab mixup is one problem, if you jump his normal grab still works(resetting the cycle) and his forward A does one hit of damage, if you stand still his blue grab woks and back A deals 1 damage, if you block both grabs would work - you simply cannot beat out his moves when he does this because he will hit on your first frame of vulnerability due to knockdown length.

** math incoming** As forward A doesn’t knock down I will factor it in to my calculations and assume he picks a random one of the three actions, damage is avoided when his bA is blocked, grab yomi’d or C jumped(1/3 chance), 2 damage and a reset occurs when grab or blue grab hit(4/9 chance) 1 damage occurs when bA hits(2/9). This means off of 1 grab loop there is a 1/3 chance of taking only 2 damage, a 2/9 chance of taking 3, a 4/27 of taking 4, a 8/81 chance of taking 5, a 16/81 chance of taking 6 etc.

**In short he has only a 55.5% chance of doing LESS than 4 damage off of a throw, 44.4% of 4 or more and a 19.7% chance of winning the round vs most characters(6 health, anyone except midori and rook himself) off of a single throw**This alone would be annoying at the best of times, but rook has a very safe approach, his B has super-armour and is only -4 on block, if you do anything other than a grab on or two damage attack after blocking he can execute his B or C and hit you. it should be noted that his B knockdowns and leads into his throw loop and his super armour is present even after he attacks so it is also safe on whiff. **in other words even on miss or whiff his B forces the opponent to pick between two options and get punished if they guess wrong and the punish is his throw loop, on hit it is his throw loop**

I could also mention his air moves having very few frames for a lumbering giant or having his jump C give him extra approach time. But the worst thing is that **in addition to all this he has the most health of the game**, In my opinion either his approach game needs to be seriously nerfed or his throws need to be toned down a bit to prevent the loop from being so easily fatal, **I could understand rook being good at one thing, but he is good at everything except projectiles**