The best replacement for finn is jake.

The best alternatives to finn are rated as following:
★★★★★  jake
★★  ice king
★★  society
★★  tom sawyer
★★  finnish
★★  link
★★  fionna
★★  finley
★★  rap bear
★  swede
★  spongebob
★  puck
★  jack
★  fiona
★  marceline
★  holden caulfield
★  fynn
★  mordecai
★  dipper
★  finn
★  racism
★  tom sawyer first
  jim
  puck glee
  fionn
  catcher in the rye
  flapjack
  lich
  loki
  mark twain
  gumball

Your alternative for finn is not listed? Suggest!
Speaking about finn, one probably shouldn't forget about flame princess.

Other search terms related to finn and their ratings are:
★★★★★ flame princess
★★ satire
★★ glee
★ sword adventure time
You have in mind a companion for finn and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of finn in all years. Click on graph for more.
finn
jake
ice king