Silver has a strong sense of justice and it is this personality trait that motivates him to head back into the past to correct the future to help his people at whatever the cost. However, this eagerness to do good is coupled with a strong naivety; he often jumps to conclusions and readily believes anything he's told. Thus he is prone to manipulation and making poor decisions; he often benefits from having someone to assist and guide him in his actions. Somewhat awkward, he has a tendency of hiding behind bravado. While determined to do the right thing, he lacks ruthlessness and sometimes has trouble figuring out the best way to attain his goals. He's also noticeably shy and somewhat polite. This kindliness often clashes with his sense of justice. Silver's sense of justice goes deeper than just saving the future, though. Regardless of his own goals, he is unable to ignore those in need of help and will put his own missions aside if there's someone in danger. He has a certain arrogance about him as well, often becoming overconfident in his powers and previous successes, which can lead him into compromising situations.
Silver is a very light gray (almost white) with white fur on his chest surrounding his neck with yellow eyes and tan skin. He wears white gloves with cyan circles with lines sticking out of the bottom leading to his golden bracelets accented in cyan. The tops of his boots are of a similar fashion with a red gem set in gold. The rest of his boots are navy blue, white and cyan. He has two large spines at the back of his head, while at the front of his forehead there are five distinct spines flared up and back, the two final ones covering up most of his ears. The glow from his telekinesis is cyan, though it has often been miscolored green.
As part of the Secret Avengers, he wears a black bodysuit with black gloves and boots; these are accented in cyan bands with gray trimming. This outfit stems from the Sonic Rivals games. Unlike the rest of the team, Silver's outfit doesn't include a visor and facemask.