Similarities:
* Time Travel: Both Trunks and Silver are time travelers, though their methods and motivations differ.
* Future-Focused: They both hail from alternate futures that have been ravaged by powerful threats (Androids for Trunks, Iblis for Silver).
* Powerful Fighters: Both are skilled and powerful fighters who use unique abilities.
Differences:
* Personality: Trunks is generally more stoic and reserved, while Silver is more emotional and impulsive.
* Powers: Trunks is primarily a sword fighter with some ki-based abilities, while Silver has telekinetic powers and a connection to the future.
* Motivations: Trunks travels to the past to prevent a future tragedy, while Silver is seeking to alter a future he has seen.
* Origin: Trunks is a Saiyan from the Dragon Ball universe, while Silver is a hedgehog from the Sonic the Hedgehog universe.
Conclusion:
While they share some surface similarities, Trunks and Silver are ultimately distinct characters with different personalities, powers, motivations, and origins. They are both interesting and well-developed figures, but their similarities are mainly superficial.