[Tony Lindman / The Great Rinaldo]
Rikkach'k is a young Ratfolk who grew up in Freedom Town. As a child, he found an affinity for chemicals, especially those that could be made to explode. After one particular mishap, the sheriff rescued Rikkach'k from his own disaster. He took the ratling under his wing, guiding him toward more productive uses of his talents.
Now a young adult, Rikkach'k sees his mentor as a hero. He is proud to have just been appointed an official Deputy Sheriff, and looks forward to keeping his hometown safe.
Not a long or detailed backstory, but the concept is that he's young and inexperienced, but eager to prove himself worthy of the trust the sheriff places in him. Details are in the profile. Sadly there are no Ratfolk avatars. :-(