Solomon is a resident of Soleanna in Sonic the Hedgehog (2006). He is an official from the Soleanna Transportation Ministry, a government department in New City that regulates the driving permissions of citizens. His particular duty is to conduct driving tests and provide licenses for those wishing to ride motorcycles. The test is a series of timed challenges involving a motorcycle, and whether the license is given out depends on the skill level of the candidate (i.e. how well these challenges are completed).
In Shadow's story, Solomon gives Shadow his seventh Town Mission. Solomon assigns him the motorcycle license test, which requires him to complete five challenges, each with a time limit of 3 minutes, using a motorcycle. These tasks include heading to a Goal Ring, shooting crates and collecting bronze medals.