Water, of course!
Although in the sonic games, he is walking in the water and not actually swimming. But for some weird reason he can swim in super smash bros. brawl! Although, in Mario and Sonic at the Olympic Games, he wears a life jacket for swimming events!
No, fear is a natural defense. Cowardice is a weakness.
In Season 1, episode 16 "Sonic Rainboom," we see a side of rainbow dash that seems unusual for her seeming to be so fearless. Ironically, she showed fear. Stage fright in a way. She was to afraid to show her performance in front of all the crowds, for she feared she would mess up doing her sonic rainboom. That would likely be considered her weakness. Fear of failure.
her biggest fear is ghosts
What is Rebecca's biggest fear
water
Asthenophobia.
asthenophobia
The cast of The Biggest Weakness - 2009 includes: Eric Krug as Jake
Harry Styles' biggest fear is rollercoasters.
Jake T. Austin's biggest fear is sharks.Jake T. Austin's biggest fear is sharks.
Sonic doesn't have a definite 'biggest fan'. Those who love Sonic as much as I do don't appreciate labeling people like that...
Harry Styles' biggest fear is rollercoasters.