Excelsior is the catchphrase of Stan Lee, who used it at the end of every column in the Marvel Comics, and it means "ever higher".
In this planet people's character are double, complex and contradictory. They are honest, but if it's necesary, they can be good liars to save themselves. They are happy and egocentric, and they have the imagination and the restlessness of the children. Excelsior people consider that the life is as a game and look for the diversion and new situations.
Usually, they are courteous, affectionate, hard workers, kind and generous. Sometimes they do whatever they have to do to get what they want. They are discouraged with facility when they can't obtain what they want, and they like to receive attention, gifts and flatteries.They love challenges and learn something new, but school tends to bore them.
They like to be with their friends, listen to music, watch movies, go to partys and travel, but they also need a lot of time alone, to think about what's happening in their lives.
They are similar to Venusians because they value love, communication and relationships, but they're different because they aren't concerned with living in harmony, actually they really like to fight.
They are very similar to Martians in almost everything, specially because they care a lot about power, competency and effiencicy. The difference between both is that Excelsiors don't rather objects than people.