Additionally, Russo's Origin Element is "Instinct," which synergizes well with his tattooed insignia, as it was designed specifically for him. This allows him to dodge attacks that seem impossible for normal humans, such as a bullet shot from behind.
Furthermore, all of Russo's clothing and gloves are woven with Nether Spider silk, making them extremely durable and highly resistant to both magic and physical attacks, including bullets. Thus, in addition to being a skilled butler, he is also trained in combat, as butlers for noble mage families need to be proficient in self-defense.
This was the role that Edward had prepared Russo for: to be the butler for a large or noble mage family.
"I've cleared the way, teacher. Let's go." Russo Veneziale said as he entered the car and drove off.