Unique
Cyrillic characters

GREEK

upper: Δ Υ Ψ Ξ Π Σ Θ Λ Ω

lower: α β δ ε η κ ψ μ π ρ τ θ χ λ ω

RUSSIAN

upper: Ё Ъ Ы

lower: ё ъ ы

UKRANIAN

upper: Є І Ї Ґ

lower: є і ї ґ

 

Typical
Asian characters

CHINESE

Square, dense

JAPANESE

Airy, loopy, diagonal curves, curlicues

KOREAN

Ovals, mostly vertical and horizontal lines (few diagonals)