I would think if any alien "beings" could manage to get to planet earth, they must be from a society that is endowed in abundance with beings having all of the attributes listed so far. Knowledge, technical skills, financial skills to be able to build a capable spacecraft. Also, since we are capable of mass self-annihilation at our current level of technology, they must be in a similar situation for a much longer time and the fact that they still exist would suggest that their society is also endowed with leadership, compassion, humanity (their equivalent) etc., all the attributes that enable a society to coexist and flourish. In fact they might be so advanced in all these areas that they might not even notice our feeble attempts at same and might inadvertently destroy us not out of maliciousness but in the same manner that we might destroy colonies of insects when we build roads or dams etc. We do it without any consideration for the consequences to these lesser life forms as we are most likely completely oblivious to their existence.
However, one attribute that the aliens may lack, as it would not necessarily be needed to create an advanced society, is a sense of humour. They may, if they observe us for a while , start to chuckle and perhaps as they begin to understand us more, fall into uncontrollable laughter at out antics. And if that makes them feel better, particularly after being stuck in a spacecraft for 100s of years, then they might actually think us useful and consider it worth including us in whatever they have planned for earth or at least keeping us around.
So my suggestion would be having us represented by a comedian, probably more of the slapstick type as they may not understand the cultural background that makes stand up comics funny. Charlie Chaplin, if he were still alive. Today's equivalent whoever that may be.