Batman: The Brave and the Bold2008

[Batman appears in front of Holmes and Watson]

Dr. Watson:
A demon!

Sherlock Holmes:
He's a hero, it's obvious by the bright blue and yellow in his costume. The mask means he must be well-known, perhaps a wealthy entrepreneur with ample free time. Square jaw indicates strong lineage, perhaps a doctor's son. And the bat motif, most surely inspired by some childhood trauma. The Masked Bat, perhaps?

Batman:
Actually, it's Batman.