Jacob

Jacob is a main character in the show, usually appearing in long episodes, building some sort of invention that then causes a problem. He is exceptionally smart.

Appearance
He has mad, scruffy brown hair, and wears lab goggles. He is very tall, and typically wears two layers.

In the early episodes, his hair was much shorter.

In the Winter episodes, he wears yellow gloves along with his normal attire.

Appearences

 * The Catch-Up List
 * Exercise: Mark 2
 * Heber Winter Special (Both parts)
 * The Collar

Alex
Jacob and Alex are shown to be very close, at least professionally. The two worked together in a custom base in the Winter Special, and Alex was assisting Jacob in The Collar. However, Jacob seems to be quite demanding of Alex, sometimes treating him like a servant.

Luke
Jacob seems to view Luke as a 'test subject', as he uses the COBEY device to control him, and seems happy while he is in pain.

Charlie
Jacob and Charlie seem to know each other, as Charlie and Jacob meet and chat in The Collar.

Robbie
Jacob and Robbie seem to slightly dislike one another, as Jacob is upset when Robbie has to wear the second COBEY, and Robbie drags them across the ground.

Vicki, Harriet and Neve
Jacob and the girls appear to be friends, as they are hanging out with each other during lunch while the invention is being built.