Rayman: Revolution (PS) has 3 bosses of this shape (The N64 version has only 2.) and I present them to you, so that you have wider custom boss selection to choose from.

Combine the two faces (normal, angry) with the three hand standing (near body, away from body, away from body palm).

Axel, the Guardian of Water and Ice is for CSet 7 and can throw ice boulders.
Foutch, the Guardian of Rock and Lava is for CSet 8 and can launch different types of flames.
Grolem, the Guardian of Air and Weather is for CSet 10 and can launch ice, whirlwind and thunder.

As you can see, I included some of these extra projectiles, but the ones already in DoR are perfect additions to some good Guardian boss battle.

UbiSoft for Rayman Revolution