Garg Ardoniquist

Garg Ardoniquist was an obese humanoid who was a "genetic sculptor".

One time, he genetically engineered a creature to make bricks out of mud using heat vision, then climb a spiral staircase to place the block at the top and then leap to their deaths. The art was supposed to represent the struggle an artist had to go through to reach the top of their field. The Seventh Doctor revealed he wasn't struggling at all; it was his creatures. One of the creatures then tackled Garg, and both fell to their demises. (COMIC: Stairway to Heaven)