- Sonic and Nikki both have superspeed and are both cocky
- Nikki and Sonic secretly have feelings for each other
- They both play guitar
- When they were at the beach, Nikki told Sonic to hold her hand and jump into the water, and that she'd never let go.
- This couple is awesome!♥ -User:NikkiKaji123
- I am neutral on this one. Why? Because I don't really ship OC x FC. If Sonic isn't totally obsessed with her, I'm cool with this couple. Meow! 12:39, February 14, 2013 (UTC)