|Place of origin:||Sewers, USA, Earth (Replacement dimension)|
Rat Boss is a character who appears in Pickle Rick. When Rick turns himself into a pickle and is flushed in sewer he is attacked by group of rats. Rat Boss is the strongest and the most distinctive rat. As such, Rick kills Rat Boss last. He states that Rat Boss was only special to the rats but means nothing to him so he won't give him any name, such as "Stripes" or "Scar."