The small giant was very powerful. He was able to take out the dragons defending the twin blades. Fought Mr Questionable. And can take in clones of himself.
Growing and shrinking still doesn't effect the power of the small giant. He can grow as big as the sun, or as small as a cell. No doubt he is a strong superhero.
Personality: Serious, Determined, colorful
Tier: Star level
Powers, and abilities: shrinking and growing, superhuman strength and agility
Attack potency: Star (Could destroy a star if big enough)
Speed: Supersonic (Can stop bullets and flip them around in mid air)
Lifting strength: star (If big enough)
Striking strength: Can normally beat up a man in one hit, that has super powers, and is also wearing armor stronger than titanium
Durability: Black hole level (Took a strike possible of leveling with a black hole)
Standard equipment: A suit to change size, and a visor to see through walls
Range: millions of miles (Can stretch his arm that far)
Intelligence: Genius (Got it from his friend, can also solve impossible puzzles)
Weaknesses: If he grows bigger than the largest sun he will turn to ashes, if he grows smaller than the smallest cell he will explode
Notable attacks/techniques: Grown up punch: Starts out small but he jumps in the air and turns his fist massive for a powerful punch.
Can grow up to the size of the largest sun
Can shrink to the smallest cell
Solved "impossible" Puzzles
Defeated superhuman opponents
Took on people who can end lives by saying so