Grover is the Blue puppet who only played by Jack on angry birds craptastic adventures on the Final Chapter and he was Allergic to

Reese's and then later he returned in The studder Show and he is going to the Angry Birds game series into the Sesame Street show series. Also he tried to kill Studder Mcstudderpants he is a Bad Puppet first

Of all he was usually works With Goomba in the Final chapter and also

Smarter then Elmo, Cookie monster, oscar, and the Dumb Dinosaur.