This is Undertale font is Unicode,
Lot of glyphs
The Font extended letter is Geometry Dash. Using: Cube
Carbonite Font, over 13 unicodes.
Unicode:
Basic Latin, Latin 1-Supplement, Latin Extended-A, Latin Extended-B, SML, Greek & Coptic, Armenian, Hebrew, Thai, Hangul, Bopomofo, Hiragana, Katakana