Archie thought they owned all the characters from the Sonic the Hedgehog comic, but when they took Ken Penders to court, they found out the paperwork was misplaced. Auditing for specific parts of the IP is tractable; maintaining confidence in everything would be onerous. More so for series with multiple authors introducing characters and plots.

When they’re disguised as an Andorian, yes.

There are also scenes with Cardassians that look like Bajorans, a Bajoran that looked like a Cardassian, a human that looks like a Malcorian, and a human/Betazoid hybrid that looked like a Mintakan,