Transformers: Exodus, Chapter three:

“Minimal
scarring from the acids,” Shockwave pronounced. “The energy weapons had
little effect. As is typical, Megatronus, you emerge from a battle with
few signs of ever having been in a battle. What fascinating prototypes I
could create from you.”

(a few seconds later)

Shockwave stopped in mid-reverie, blinking and returning to the real world from his imagined army of Megatron-inspired supermechs. “What?”

In conclusion, Shockwave wants to make babies with Megatron. Think of them… great big monsters. They’d conquer the world.