Zarakus is all red.  Not just his scales, though his draconic appearance - even to the large, strong tail, did largely cover over his human side.  His face would be angry enough with just the color, but its resting expression is a deep frown, bordering on a scowl. His enormous, beautifully forged set of full plate armor has also been treated to have a red hue to it rather than the normally silvery hue of untreated steel.  The rest of his equipment is all of notable craftsmanship and is meticulously kept in good repair, and each piece is of the usual color, including the silver holy symbol of the Father that he wears around his neck.

Zarakus is not used to regularly dealing with those who are smaller and weaker than himself... or who are humanoid in general... so he often comes off harsher than he intends to be.  However, he is friendly enough to get by and is quick with practical assistance to those in need.