Silver the Hedgehog

Silver the Hedgehog is a character from Sonic Ultimate.

Personality
Silver is a kindhearted and well-meaning individual, driven by a strong sense of justice to right the wrongs of the past to uphold peace, though he is somewhat naïve and immature. Despite the monumental tasks he may have on hand, he is an optimist and will do whatever it is required to protect the world. Silver has saved his timeline multiple times before, and as a result tends to be very cocky and stubborn, often choosing to do things his way and go with his own plan, no matter how half-baked and reckless it is. Along with his cockiness, Silver is also extremely confident and truly believes he can beat anyone he faces.

Despite this, Silver has shown to be an extremely selfless person who is always quick to put the wellbeing of others before his own. A good example of this can be seen in the tenth episode of Season 5 (Silver's debut episode), when he decides he stays to help Team Ultimate protect Emerald City (when he was only going to visit them at first), even though he was almost 100% sure that the events in their time would make something go wrong in his time, 200 years in the future. Silver also has a very strong sense of loyalty, and will do anything to protect the ones he calls his friends, even going as far as taking someone else's life and almost losing his own in multiple instances, just to make sure his friends are okay.

Silver has also displayed socially awkward tendencies and slight emotional instability, which actually isn't out of the ordinary for someone who has lived in the conditions that he has for his entire life. It has also been hinted at multiple times in the series that he suffers from several mental health disorders, such as anxiety and depression. The only things that truly act as anti-depressants for him are seeing his friends and helping other people, which explains why he goes to such extremes to achieve the latter, because it is the only thing that keeps him sane.

Regardless, Silver is an extremely kind-hearted person who loves being around other people, and has formed very strong bonds with the others in the series, most notably Jawbreaker the Cat.

History
Silver is not present in the series until the middle of Season 5.