The best replacement for brian is bryan.

The best alternatives to brian are rated as following:
★★★★★  bryan
★★  stewie
★  dorkman
★  peter
★  patrick
★  quagmire
★  vinny
  right brian
  left brian
  bird jesus
  santa's little helper

Your alternative for brian is not listed? Suggest!
Speaking about brian, one probably shouldn't forget about lois.

Other search terms related to brian and their ratings are:

★★★★★ lois
★★★ ghost hunters
You have in mind a companion for brian and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of brian in all years. Click on graph for more.