The best replacement for four is x-men.

The best alternatives to four are rated as following:
★★★★★  x-men
★★★★  five oceans
★★★★  dr doom
★★★★  five string bass
★★★  peeta
★★★  xbox one
★★  fore
★★  avengers
★  four
★  super skrull
★  incredibles
★  v-twin
★  silver surfer
★  xmen
★  two stroke engine
★  five
★  tobias
★  fantastic four
★  two stroke
★  peg perego pliko 3
  six cylinder
  twenty-four
  iphone five
  justice league
  twenty four
  magic johnson

Your alternative for four is not listed? Suggest!
Speaking about four, one probably shouldn't forget about no number one seeds.

Other search terms related to four and their ratings are:
★★★★★ no number one seeds
★★ spiderman
★★ rose stone
You have in mind a companion for four and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of four in all years. Click on graph for more.
four
x-men
five oceans