Gemini believes that goodness comes from diversity and diversity comes from goodness. S/he values those who share this philosophy. Those who are lawful good are generally more stringent in their philosophies, so though they are not looked upon with as much favor, they are still accepted as followers.
Gemini is unique in that his/her preferred avatar is some sort of unlikely pair walking side-by-side. For example, Gemini may appear as a male dwarf and a female elf, or a female elf and a male ogre. These are just examples, though one of the pair will always be male, one will always be female, and they will always be walking side-by-side, even in narrow corridors. Space is, somehow, not an issue.