I have quite a substantial collection of Hero Mechs in MWO.

Light

  • Arctic Cheetah – Shard
  • Commando – Death’s Knell
  • Firestarter – Firestorm
  • Locust – Pirate’s Bane
  • Urbanmech – Streetcleaner

Medium

  • Cicada – The X-5
  • Centurion – Yen-Lo Wang
  • Griffin – Ares
  • Hunchback – Gridiron
  • Nova – Breaker
  • Shadow Cat – Mishipeshu
  • Viper – Medusa

Heavy

  • Cataphract – Ilya Muromets
  • Ebon Januar – Espirit de Corps
  • Jaegermech – Firebrand
  • Mad Dog – Revenant
  • Orion IIC – Sk├Âll
  • Rifleman – Dao Breaker
  • Summoner – Pride
  • Timber Wolf – Warrant

Assault

  • Atlas – Kraken
  • Banshee – Siren
  • Blood Asp – Rancor
  • Cyclops – Sleipnir
  • Direwolf – Ultraviolet
  • Executioner – Cherbi
  • Highlander – Heavy Metal
  • Kodiak – Spirit Bear
  • Marauder II – Alpha
  • Stalker – Misery
  • Victor – Dragon Slayer