The best replacement for nemesis is tyrant.

The best alternatives to nemesis are rated as following:
★★★★★  tyrant
★★★  king mod
★★★  pyramid head
★★★  arch enemy
★★★  superfly
★★  chi you
★★  stingray
★★  shock trooper
★★  magneto
★★  caravela
★★  k100
★★  bastion
★★  blade
★  vamo
★  ghetto ghost
★  wesker
★  blade cave story
★  death star
★  jaximus
★  jill
★  temple jax
★  m16
★  origin mod
★  l drago
★  felheart
★  phantom orion
★  ustanak
★  turtle ship
★  code empress
★  penance
★  l drago destroy
★  code battle seraph
  mr x
  big bang pegasus
  jade jupiter
  demonseed
  twisted tempo
  killswitch
  super fly
  planet x
  kerbecs
  nemesis inferno

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

Other search terms related to nemesis and their ratings are:
★★★★★ kayfun
★★★ kraken
★ kayfun lite
You have in mind a companion for nemesis and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nemesis in all years. Click on graph for more.
nemesis
tyrant
king mod