Can players attack a bot that is online at that time?
This is a multiplayer online fighting game, so yes. But there is a penalty to discourage it, because it is not a very social thing to do. For an online attack you receive only 50% of the normal amount of xp and only 20% of the normal amount of kudos. If someone attacks you while you are online, it is their right, so don’t come crying to me and do not threaten the other player that you will get his bot deleted. Instead, I might just surprise you and delete you.