What kind of powers and abilities does Canary from Gon Freecss as he sets out to become a Hunter – an elite professional whose job involves locating rare lifeforms, hunting treasure, surveying unexplored lands and tracking down dangerous criminals.
To achieve his dream, Hunter X Hunter's Gon has to a series of grueling trials known as the Hunter Exam. While taking the exam, Gon befriends fellow wannabe Hunter Killua Zoldyck who hails from a clan of wealthy and infamous assassins. The Zoldyck family reside on a massive estate at a dormant volcano that’s surrounded by massive stone walls and protected by guards and butlers to keep intruders at bay – one of which is a loyal young butler-in-training named Canary.
Canary made her Hunter X Hunter debut during its Zoldyck Family arc. This follows Gon – along with his fellow newly licensed Hunters and friends Kurapika and Leorio Paradinight – as they try to rescue Killua from the Zoldyck estate which he retreated to after failing the Hunter Exam arc. There the trio meets Canary who is guarding the grounds and refuses to let them progress any further. The ever-loyal Canary ends up striking Gon repeatedly, suggesting she’s quite strong. However, because she’s a minor character who has yet to fight a major battle, not much is known about the powers and abilities Canary has in Hunter X Hunter.
However, when Canary later appeared in the thirteen Hunter Chairman Election arc, she demonstrated the ability to use Nen (a technique that allows a person to manipulate and use their own aura or life energy) when she successfully piloted fellow Zoldyck servant Tsubone, who had transformed herself into motorcycle. In the most recent Studio Madhouse anime adaptation of the Hunter X Hunter manga, Canary is also shown to have mastered the art of replicating a number of the Zoldyck family’s assassination techniques.
One of those techniques is known as "Rhythm Echo" which allows its s to create multiple afterimages of their body to confuse opponents and Canary once successfully deployed this to single-handedly defeat 100 henchmen trying to infiltrate the Zoldyck estate. So, while the full extent of abilities that Canary has in Hunter X Hunter is unknown, it’s fair to say she’s a pretty powerful character who’s more than competent in combat.