Thomas Tucker was a researcher working in Human Resources. One of his tasks consisted of managing conflicts between employees, such as the one between Josh Dalton and Lane Carpenter, which Tucker was informed about by Dalton sending him twelve e-mails.
Morgan Yu finds his corpse in Arboretum. He carries veggie blend, 9mm bullets and Typhon Lure. A Silenced Pistol can be found on the bench near him. Tucker appears to have been sitting on this bench & observing something on the Looking Glass screen in front of it, before committing suicide with the pistol.