Lysippos was a special artist who lived a long time ago in ancient Greece. He was famous for making amazing sculptures, which are like big statues made out of stone or other materials. Lysippos was very good at making his sculptures look very real and lifelike, as if they could come alive and walk around!
Now, you know how when you look at your face in the mirror, it might look a little different than a picture of your face? That's because pictures are just flat, and your face is 3D, or like it has depth and shape. Lysippos was really good at making sculptures with 3D shapes too! He would pay attention to the tiniest details, like how a person's muscles looked when they moved, or how their clothes draped over their body.
People liked Lysippos's sculptures so much that he became very famous during his time. He created many sculptures of great warriors, athletes, and even gods and goddesses! Even though Lysippos lived so long ago, people still talk about his art today and think he was one of the best sculptors ever!