Ripley meets Burke, a mid-level manager at Weyland-Yutani. He seems helpful. He tries to help Ripley prove her case before the other bosses, but they don't believe. Later, the company loses contact with the colony on the planet the Aliens come from. Burke knows that Ripley was telling the truth and is the closest thing to an expert they have on Aliens. Along with Gorman, a marine officer, Burke tries to convice Ripley to come with them. He even tries bribing her with a job. She eventually says yes because she wants to overcome her fear and she wants to make sure that all the aliens die. Burke agrees with the plan to eradicate them (but secretly, he actually wants to bring them back for the bioweapons research team)
Burke, 
Lt. Gorman. A marine officer who believes that he and his marines are more than enough for the aliens (which he calls Xenomorphs)