They might be giants

THE OTHER FACES OF HANK PYM

Giant- Man

Tales To Astonish # 49 ( November 1963)

Using the same science ( Pym particles) that allows him to shrink, Pym is able to grow to the 12- foot- tall ( and later 100- foot tall) Giant- Man.

Goliath

The Avengers # 28 ( May 1966)

After retiring to lead a normal life, Pym returned as Goliath, boasting the same power set as Giant- Man but limited to 25- feet and only in 15- minute bursts.

Yellowjacket

The Avengers # 59 ( December 1968) Out of control after a failed experiment, Pym becomes Yellowjacket, sporting artificial wings and bioblasters called “stingers” in his gloves.