Available/Ready to Fight: This icon indicates that your hero is available for any actions, and you have full control over their participation in various activities.
In Adventure: This icon signifies that your hero is currently exploring an adventure, restricting some of their actions. While your hero is in aadventure, you cannot sell them, stake them in reinforcement, or modify their equipment.
In Reinforcement: This icon denotes that your hero is staked in reinforcement, temporarily limiting all actions with your hero until you decide to unstake him.
Additionally, there's the "In Marketplace" status, even though there is no specific icon for it. While your hero is listed in the marketplace, various actions with the hero are restricted. However, you have the option to close your position and return your hero if no one purchases it.