Ego.
Ego is always placed from the Ego track, and it is placed in Chameleander’s clearing, though it cannot be placed where there are restrictions preventing such
(e.g. The Keep or a snare). Ego always moves with Chameleander, ignoring all effects that might prevent Ego from being moved while Chameleander moves. Ego on the map always goes wherever Chameleander goes however Chameleander goes. Once per turn, if an effect would try to target Chameleander for removal or replacement, remove an ego instead and resolve the effect
(e.g. if Lizards try to convert Chameleander, an ego token is removed and they place a Lizard warrior in your clearing). If additional effects try to target Chameleander for replacement or removal, they fail. Once per turn, if an effect would give Chameleander 1 or more warriors in any clearing from your supply by allowing you to place warriors from your supply or allowing you to replace another game piece with a warrior from your supply, instead place an ego token in your clearing, even though you have no warriors in your supply, and score the victory points listed on the space uncovered on your faction board
(e.g. if you have crafted Propaganda Bureau, you may replace a warrior, removing it from the clearing and then placing an ego token in your clearing even if the warrior you target for replacement is not in your same clearing). Any additional effects after the first that allow you to place warriors from your supply fail to let you place ego this way.
(If some new game effect adds a warrior or more to your supply, you may either choose to place a warrior or place an ego, but this special ego placement may only happen once per turn). If an effect only triggers when a warrior is removed, it cannot be enacted by attacking the Chameleander warrior
(Vagabond, for example, cannot go hostile with Chameleander by attacking them) but if the effect is meant to also work against the vagabond, then it can be applied to Chameleander too
(e.g. if an effect is activated by removing a warrior or damaging a vagabond item, then removing an ego token would be the equivalent of such interactions).