Dwarf 5

A dwarf ​is an unnamed minor character in the fourth season. He is played by guest star Krysten Coombs and only appears in "The Lion and the Rose".

Background
A dwarf, he makes a living by performing for other peoples' amusement.

​Season 4
Along with a group of other dwarfs, he re-enacts the War of the Five Kings. He dresses as Balon Greyjoy and rides a kraken.

In the books
In the A Song of Ice and Fire novels, there are only two dwarves jousting. One rides a dog while the other rides a pig.