Some Scary-Sounding Names From Games

Here are some scary-sounding names from games, films, and media that evoke a similar awesome and intimidating vibe like "Raiden":

1. Malazar (Doom 3) - The name sounds demonic and menacing.
2. Grendel (Beowulf) - A monster from Anglo-Saxon legend, the name conveys brute strength and terror.
3. Onslaught (Mortal Kombat) - A brutal, aggressive-sounding name for a fearsome fighter.
4. Xandria (Warframe) - Despite being a woman's name, it has an otherworldly, ominous tone.
5. Vex (Destiny) - A name that sounds like a dark entity or an evil power.
6. Baldur (Dungeons & Dragons) - A god of light, but his name can still evoke a sense of power and potential danger.
7. Cerebus (Hellboy) - The name of a monstrous canine creature, it's dark, foreboding, and compelling.
8. Kerberos (God of War) - A hellhound from Greek mythology, the name suggests fiery, destructive power.
9. Zeratul (StarCraft) - A powerful, sinister-sounding name for a dark templar.
10. Shao Kahn (Mortal Kombat) - The ruler of Outworld, the name has an imperial, menacing quality to it. 
11. Malice (Warcraft) - A name that reflects the title's malevolent, cruel nature.
12. Oni (Devil May Cry) - The Japanese word for "ogre" or "demon," used for a type of demonic creature.

These names all have a certain darkness, power, and intensity that make them sound equally as awesome and scary as "Raiden." They could work well for characters in fiction who embody strength, evil, or supernatural menace.