Their names match, and fit your description well,
Well it really depends on the personality of the turtle, there is no way to find out if yours will or will not bite. Some turtles have known to never bite humans, even long into their adult years, while others snap at you every chance they get from birth. Some are even fairly docile until some random point (years later even), before they finally decide to make their move. As for tendency, it is generally random, but MOST turtles, if given a free shot, will go and try to chomp off what they think is live prey,
Some owners have had success by hand feeding their turtles as little hatchlings so that the turtles get used to the owner's fingers, but this hasn't always worked.
Hatchling bites generally do not hurt, they feel like a slight pinch at most, however as your turtle grows, it will start to hurt until your turtle is about 4 inches, then it may draw blood and from then on, will hurt more if you ever get bitten. I just very recently had the same question as you about the possible danger from adult turtle bites, and I learned that adult RES probably won't break off your finger if they bite (don't risk it anyways and try), but it will most likely result in bleeding, loss of some skin/flesh on your finger, and as always, pain.
A general rule of thumb for your own safety is to never place your fingers or any susceptible body part in the way of your turtle's head, or even the area around it (since turtles have really long necks, and can extend it to it's limit in a second or two), unless you want to take the risk and are willing to accept the pain should you get bitten.
Hey hey hey.