Spider Climb. The ViraBot can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Walker. The ViraBot ignores movement restrictions caused by webbing.

Aggressive. As a bonus action, the ViraBot can move up to its speed toward a hostile creature that it can see.

Blind Senses. The ViraBot can't use its blindsight while deafened and unable to smell.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage, and the target must make a DC 13 Constitution saving throw, taking 9 (2d8) poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Slash. Melee Weapon Attack: +4 to hit, reach 10 ft., one target. Hit: 6 (1d12)  slashing damage plus 6 (1d12) poison damage. The target must make a DC 10 Constitution saving throw. If the target fails, they are poisoned for 1 hour.

Web (Recharge 5–6). Ranged Weapon Attack: +5 to hit, range 30/60 ft., one creature. Hit: The target is restrained by webbing. As an action, the restrained target can make a DC 12 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).