Jonah’s a pretty unlucky dwarf: he got to 7 feet tall before his 80th birthday and suffers from alopecia.
Both sad circumstances got him shunned from dwarf society and exiled in the forests. Because he never learned a craft (or a language for that matter), his survival depends on pillaging nearby farms. Humans fear him and have formed several hunting parties to kill him.
Yup, he’s a pretty bitter guy!