Classic Characters Grow Up

Recently, Micol Ostow and I discussed Law & Order shows. During the Criminal Intent portion of our conversation, we agreed that the character of Detective Robert (Bobby) Goren is brilliant. She related him to "a grown up, super-steroids version of Encyclopedia Brown."

This made me wonder three things:
1) What characters grew up and became . . . other characters?
2) If Goren is Encyclopedia Brown, is Detective Alexandra (Alex) Eames Sally Kimball?
3) Was I the only person who watched the short-lived Encyclopedia Brown television series in 1989?

Book bloggers and avid readers, feel free to answer the first question. Be funny, be serious, be creative!

Oz and Ends and Fuse #8 are also discussing Encyclopedia Brown.