The best replacement for zombies is robots.

The best alternatives to zombies are rated as following:
★★★★★  robots
★★★★★  plants
★★★★★  unicorns
★★★★★  vampires
★★★★  humans
★★★  aliens
★★  plants 2
★★  cheerleaders
★★  ninjas
★  army of darkness
★  wrestlers
★  penguins
★  supermodels
★  infected
★  plants free download
★  plants garden warfare
★  plants free
★  plants videos
★  ambulance
★  gladiators
  flowers
  humans game
  bandits
  bots
  ambulances
  pirates
  hippies
  zombies
  plants game
  plants cheats
  swat
  humans ohio state
  shotgun
  robot
  bath salts
  plant
  santa walkthrough
  burt reynolds
  not iconic movie characters
  cockneys
  werewolves
  skeletons
  demons
  living dead
  plants wow
  plants xbox one
  santa claus
  multiplayer
  blackwings
  humans movie
  slow zombies
  soldiers
  plants games
  knights of the nerd table
  plants video
  plants for free

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

Other search terms related to zombies and their ratings are:
★★★★★ michonne
★★★ guns games
★★ paintball
★ nerf guns
★ chainsaws games
★ meatwagon
You have in mind a companion for zombies and it is not yet here? Propose!



Google Trends

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