Here is the central riddle of your Leo Sun, Aquarius Moon baby: they want to be the most noticed person in the room, and they also couldn't care less what the room thinks of them. The Leo fire needs an audience — needs warmth returned, needs the spotlight to feel real. But the Aquarius moon processes feeling from a cool remove, almost clinical, observing the reaction they've caused before deciding whether to care about it. These two don't cancel each other out; they create a baby who performs with genuine conviction and then mentally files away whether it worked.
What makes this particularly interesting is the double-fixed modality underneath both placements. Neither the sun nor the moon is built to be redirected — Leo holds its enthusiasm like a fist and Aquarius holds its detachment exactly as tight. So this isn't a child who cycles between warmth and distance the way a mutable pairing might. They commit fully to whichever mode they're in: fully dazzling, or fully in their own world, with a surprisingly clean switch between the two. Air feeding into a Fire sun can amplify rather than cool it — the Aquarius moon hands the Leo sun new ideas to burn through, which means this baby's enthusiasms can be inventive, surprising, and a little unconventional even for their age.
The rising sign will meaningfully shift the balance. An earth rising slows the performance down and makes them seem steadier than they feel inside; a fire or air rising turns up the broadcast volume considerably. Check your baby's specific rising page to see where this pair lands.