I am introducing Grinner to my game since my players are essentially bumbling fools and can't figure out how to do anything. So I am setting him up as their mentor who has taken an interest in them since they dealt with Teemo the Hutt.
Here is my intro of him:
After a short while the cantina doors open and a handsome, old, scruffy-looking spacer saunters in. It is obvious he has seen his share of adventure and lived to tell about it. He wears a deep blue heavy jacket, with a carelessly dishelved shirt underneath, black pants with red stripes down the outer leg tucked into simple black boots, and a well-worn heavy blaster pistol hangs at his hip. His salt and pepper hair is perfectly messy. His dark brown eyes peer out from under grey eyebrows and survey the cantina. He spots your group, nods and cracks a smile through his salt and pepper beard, then heads to the bar.
I picture him as Dass Jennir from the Dark Times: Blue Harvest series.