No, They don't have a bot match in Halo: Combat Evolved, Halo 2, Halo 3, and Halo ODST. I don't think they will have on in Halo Reach
Aimbots do not exist for Halo 3. There are mods for maps though. If you put mods on your file share, it is possible you will be banned though.
a forerunner defense bot
You Can't.
be the party leader in custom games...
Its in one of the settings in a "custom match."
on the halo 3 main menu go on matchmaking pick a gametype and select start match making
go to match making pick a gametype and start
in match-making, its completely random...
A ranked match on Halo 3 is a match that follows all your statistics and experience, this ranked play list is how you increase your skill. It will track your skill and try to help find a game closest to your level of experience. Xbox Live guests are not allowed to play in ranked matches.
Go to a custom match and shuffle through them.
The Social Slayer playlist in Halo 3 has two teams of five players each, so ten people can play at a time.
im pretty sure you go to lone wolves