THE DESTROYER, otherwise known... as eric.

[u/EntertainerPure8440]

Lord Voldemort - Tom

Mister Incredible - Bob

The Son Of God - Yeshua

Basically, really intimidating nicknames used instead of birthnames, the likes of which aren't intimidating at all.

Title taken from this video (timestamped).

• LORD VOLDEMORT (Harry Potter): otherwise known as Tom.
• MISTER INCREDIBLE (The Incredibles): otherwise known as Bob. My man was genuinely named Robert Regular lmao
• THE SON OF GOD (New Testament): otherwise known as Yeshua, an extremely common name back then.

[u/Randomass-Name-2987]

The trillion-year old demon set on razing all that is,

Bill

[u/EntertainerPure8440 → u/Randomass-Name-2987]

How could I forget this? Just found my actual Bat-themed hero

[u/PablomentFanquedelic → u/Randomass-Name-2987]

Speaking of Bills, here's a notorious international terrorist leader of that name

EDIT: He even has a badass alias like the guys OP mentioned: Snakecharmer.

[u/Few-Big-8481 → u/Randomass-Name-2987]

In fairness he picked his name probably for that effect.