User blog comment:Fistful of Force/How early can you do dragon analysis/@comment-3450702-20120911182846

Some early soloers, not mentioned bellow, include warwick (painfully slow), nunu, udyr, lee and I think Poppy also used to. Usually only with wriggles.

But dragon should never be soloed in serious games, it's too risky. Usually, it's safe to take dragon knowing you'd be 2 people above them, and high DPS mid champs really help (Karthus, Cass), even more so than the AD, since the AD carry usually doesn't have too much DPS at the early levels.