1) Character created by Stan Lee 2) Fictional engineer 3) Fiddler 4) He plays in the workroom 5) Mister fix-it 6) One given to fiddling 7) One who fiddles 8) Typical inventor 9) Unskilled person 10) Untrained fixer Found on https://www.crosswordclues.com/clue/tinkerer
==Fictional character biography== Phineas Mason is a brilliant inventor and technician who designs advanced weaponry for criminals and sometimes undertakes crimes of his own. As the `Terrible Tinkerer`, he runs an underground fix-it shop disguised as a radio repair shop. On at least one occasion, a potential customer gained the inventor`s atten...... Found on http://en.wikipedia.org/wiki/Tinkerer