Vampdash

Vampdash is a Spark that appears in Mario + Rabbids Sparks of Hope. It is purple, and rides a purple leaf. Its Power is Vamp, which applies a life-sapping status effect to enemies. When the player damages an enemy afflicted with this status, a portion of the damage the enemy takes is transformed into healing energy, which restores the player's health.

Mario + Rabbids Sparks of Hope website
''They say you can't buy health, but you sure can steal it. Just ask Vampdash! Its power allows you to transform part of the damage dealt to an enemy into healing energy for your hero.''