Gruntbot

Gruntbots are the main enemies in Banjo-Kazooie: Nuts & Bolts. As their name suggests, Gruntilda built them to make it harder for Banjo and Kazooie to make it back to Spiral Mountain. Gruntbots come in many varieties, and can be defeated by either ramming them, hitting them with the wrench or shooting them.

Pink Rollers
First seen in Nutty Acres Act 1. Mostly harmless, they slowly roll into your vehicle doing minor damage, and can easily be defeated.

Red Rammers
First seen in Nutty Acres Act 4. If they catch sight of Banjo, they will rise into the air, cackle and slam into your vehicle, often knocking loose a part or damaging it severly, thankfully, they have very low health and giving THEM a ram will often result in their death. There is tiny ones and huge ones.

Stickers
First seen in Banjoland. If you break open the Stop 'n' Swop eggs around the area, small cube shaped Gruntbots pop out and latch onto your vehicle slowing you down. Very weak but try to avoid them when racing.

Suckers
Rectangular with a large fan in the middle, if you venture too close, they will turn on the fan and suck you and your vehicle towards them. They have moderate health, but your best strategy is to jump out of your vehicle and hit them with the wrench if you don't have weapons, or, if you vehicle has guns, defeat them from a distance.

Blowers
Rectangular with a large fan in the middle, if you venture too close, they will turn on the fan and blow you and your vehicle away. They have moderate health, but your best strategy is to jump out of your vehicle and hit them with the wrench if you don't have weapons, or, if you vehicle has guns, defeat them from a distance.

Floaters
Balloon-shaped Gruntbots that will latch onto your vehicle and attempt to lift you off the ground, while low on health, they're rather difficult to hit, so your best bet is to just avoid them altogether.

Green Gunners
Green gruntbots who have been outfitted with a cannon on thier back. Proceed with caution as they can do some heavy damage. Try to shoot them before they get a chance to shoot you as they have a tendency to knock parts off your vehicle.

Grabbers
Circular Gruntbots that will hover over to your vehicle and attempt to pull parts off with a laser-cutter. Once they latch on it's difficult to pull them off, so be careful, as with the Floaters, they can be difficult to hit after they are in the air, so try to just avoid them.

Rust Balls
Rusty Gruntbots who have a very nasty ability, they can rust over your vehicle, severly crippling its speed or stopping it altogether. They have moderate health, so ramming them works fine, but as always, weapons work much better.