I don't think that English was "busting" on anybody (whatever that means).
KSU Aviator is not qualified in the King Air. He didn't indicate the type of operation, or the regulations under which it is operated. He didn't indicate weather his company is required to use a SIC in their operations, or weather he has had any familiarization with the aircraft and at least meets the Part 61 requirements for SIC, including operating experience.
Under Part 135, KSU Aviator cannot serve as SIC weather he's required or not, unless he meets the training and paperwork requirements of 135. Under Part 91, so long as he meets the basic requirements of familiarzation and 3 takeoffs and landings as sole manipulator of the controls, in accordance with 14 CFR 61.55, he's golden. If he has met those requirements, then he may serve as SIC under Part 91 operations, but not under Part 135. He will need to meet the additional company requirements for qualification as SIC under Part 135...and that means especially the paperwork.
It would be best to contact your supervisor (chief pilot directly if it's a small company) and get some clarification on the staffing for the airplane, if you feel you're not legal and qualified. I realize that being new to the company, you don't want to make waves, but you can't do what you can't do...always get clarification. Your employe should appreciate the effort.
If the OpSpecs don't require a SIC and you're simply there for insurance reasons, and are qualified under 61.55 (but not 135), you may go to meet the company needs (insurance, etc), but may not manipulate the controls. In this case, you're really a passenger with respect to legality, because you don't meet the company requirements for SIC in that aircraft under part 135. If you're not qualified at all in the airplane, you may go, so long as you understand you're not actually serving as SIC--and this assumes that you're not required in the airplane. In this case, you're a passenger either way.