Is cookie monster the strongest muppet?

The strongest muppet is clearly Ms Piggy. Have you not seen the damage she can inflict? 

I have converted my religion to serve cookie monster. To avoid the rapture, we must feed him. 

You bet your sweet @ss he is.

I did hear that he got Miss Piggy pregnant too, So mums the word. 

No. That would be Super Grover.

No way! Miss Piggy would f@ck them all!

I'm going with Snuffalupogas, or if you mean most powerful than Yoda

Yes, he is!!!!!!!!!!!!!!

No, but I recall a giant muppet that once swallowed a man whole.  Unfortunately, I can't recall his name.  

There is that weird goofy monster Sweetums that runs around in some if the older Muppet movies that seem quite strong. But in Sesame Street Big Bird seems pretty strong, the Cookie Monster is more crazy aggressive.