Red Skull with Horns — Dark, Menacing

1600 × 1200

Skull Made of Code

1920 × 1080

Green Text with Sword — Dramatic

1440 × 900

Nightmare Imp title screen

1280 × 720

Demon with Horns — Green, Dark, Dramatic

1024 × 768

Arachnotron from Doom

1280 × 720

Pixelated Skull in Space — Black

3840 × 2160

Skull Logo on Rock

1920 × 1080

Female Demon Character — Blue, Dramatic, Digital Art

1920 × 1200

Minecraft Logo — Black, Dramatic, Digital Art

1024 × 640

Pixel Art Characters — Blue, Dramatic

1920 × 1080

Mancubus monster from Doom

1280 × 720