Character similar
           (Pilots)
  ┌───────────────────────────────┐
  │                               ∨
┌────────┐                      ┌───────────────────────────┐  Human-operator           ┌─────────────┐
│ Avatar │  Opening similar     │          Aliens           │  controlled Mecha as in   │ Xenogenesis │
│        │ ···················> │                           │ ························> │             │
└────────┘                      └───────────────────────────┘                           └─────────────┘
                                  ∧
                                  │ Set-design influenced by
                                  │
                                ┌───────────────────────────┐
                                │  DOOM "Fight Like Hell"   │
                                └───────────────────────────┘