LEGO Brickheadz 41587 Robin - The Box art.
The build is straight forward, very similar to Batman and Batgirl sets. I like the glasses.
There are some extra parts given in this set:
Batman besides Robin 😊
Batgirl is slightly higher than Robin.
LEGO Brickheadz 41588 The Joker - The Box Art
This set has the most pieces compare to other Brickheadz set, it has 151 pieces. Inside the box you will find 1 building instruction, 2 4x6 baseplate and 2 bags of bricks.
From the box, I don't feel I like the design of this joker until I build it. I am impressed with the way the hair is being constructed. This set has most pieces compare to others is because most of the bricks are used to construct the hair. Look at the picture and you will see it.
Besides the hair, the hand is slightly different from the Batman, Batgirl and Robin sets. Instead of using a 2x2 brick, it separated into 2pcs of 1x2 bricks. The shirt is separated into 2 pieces with different printing - necktie and pockets. The mouth is printed and it's the only set with the mouth printed beside Captain Jack Sparrow.
There are some extra parts for the set:
Batman vs The Joker - Enemy forever. 😁
Batgirl vs The Joker.
Complete set of LEGO Brickheadz - The LEGO Batman Movie Theme.