Chuck (Sonic Underground)

Chuck is a character in Sonic Underground. He is the uncle of Sonic the Hedgehog (presumably through Sonic's foster parents), and was a high-ranking member of the Freedom Fighters stationed in Robotropolis, until he was captured by Dr. Robotnik's forces and roboticized.

History
At some point during Dr. Robotnik's tyranny, Chuck became a Freedom Fighter, and served as a major member in the resistance against Robotnik.

Following the arrest of Sonic's forster parents at the hands of SWATbots and the destruction of Sonic's home, Chuck found Sonic crying in front of his burning house. Upon seeing Sonic, the young hedgehog jumped into Chuck's arms, sobbing, and he comforted his nephew by telling him that everything would be fine.

Over the next years, Chuck took it upon himself to raise Sonic, and eventually got him into the resistance, working with him on the destruction of many SWATbot factories. After having worked together with Sonic for a year, Chuck had his nephew go on a mission to destroy a prototype force field Robotnik had developed for his factories. However, Chuck insisted that Sonic was careful not being seen during this mission, since he knew Robotnik would make Sonic a constant target for his forces if he figured out he was behind the destruction of his factories. After having made sure the coast was clear, Chuck send Sonic off. During the mission, Chuck told Sonic over the communicators that he did not have to do this mission. Sonic, however, insisted to his uncle that he completed his task, and managed to destroy both the force field and Robotnik's factory.

After Sonic had returned home, now having overexerted himself, Chuck told his sleeping nephew how proud he was of him, while taking solace in knowing Sonic made it through alive. As he head out to find a doctor for him, Chuck told Sonic not to do anything stupid while he was away.

After Sonic had left to find his siblings, Manic and Sonia, Chuck was found and arrested by SWATbots due to his connection to Sonic. Chuck, along with Manic's and Sonia's foster parents were then roboticized and turned into Robotnik's slaves.

Personality
Chuck is a warmhearted person who deeply cares for his family, always willing to offer comfort and helping them in anyway he can. He is usually mild-mannered and cheerful, but is well-aware of the life-threatening risks that a Freedom Fighter must face. As such, he will not risk Sonic's life, and is willing to offer Sonic to back out of his missions, despite of the consequence that might follow.