maybe we should be asking, "how young is young Pym?" we might be seeing him at multiple stages of his life. and we don't know how old he was when he first suited up, as Ant-Man; either. one could assume that he's in his early to mid-20s. but Scott Lang seems to be suiting up as Ant-Man for the first time, in his early 40s. and Pym might have started when he was high school age.