I thought of something similar, in regards to a 'slow' heavy hitter, like a extremely limp yet flexible adult giraffe who fights in her sleep. Sharp, rapid kicks, a long neck that can whip into various shapes or coil around a foe, and a muscular body that can crush a lion just by sitting on it. Though she can't jump very high, she'll take a lot of hits due to her size and getting in a good shot of a Super would make her stumble about in a half-awake confusion.
Or one of my latest pieces, a Topi that is covered in bulky, heavy metallic armor, designed to contain the fierce fighting spirit within as to prevent others from getting hurt. With each hit, he becomes faster, more accurate with his strikes, able to rush-jab, and the power of his attacks increase over time until all that remains is his helmet, which upon shattering, his body can fully move at his true strength unhindered and glowing with a heroic aura of strength. I mean, in a way, Topi are perhaps one of the most regal yet powerful equines to roam the savanna without a care.