Exosphere

Exosphere is a Spark that appears in Mario + Rabbids Sparks of Hope. It is a plump, black Spark with three shields behind it. Its Power is Fortify, which allows all Heroes within range of the user to take less damage from physical attacks and Super Effects. Its Bonus is Athlete, which increases the damage of move abilities. Exosphere joins the heroes alongside Edge, who has Exosphere equipped during the battle against the Giant Wildclaw.

Mario + Rabbids Sparks of Hope website
''Next to him, you see Exosphere. When its friends are threatened, it gets defensive. Partner it with a hero to make them more resistant to physical damage and super effects.''