An old gray-haired grandfather, slovenly. Thanks to the potions and elixirs he brewed, he became a supreme being who knew the answers to all questions in the universe. 
The chemist likes pate, tea. 
He lives in a huge tree, his house is a mess, books, flasks, potions everywhere.
The chemist is very fond of using phraseology and proverbs in his speech.
He brews various substances that people call drugs. But he considers them to be mind-expanding potions