forgetful? inattentive? oblivious? unmindful? sloppy? disorganized? demented? (as in seniors' dementia)
A loser
Someone who is hired to lose is called a Jobber
Someone who doesn't have a life. If you meet someone like this tell them that they need to be more social.
a stalker
Not always, no.
Sociable
You call them a snotty jerk. They are also selfish!
An Electrician
germaphobe.
a spouse
A Jonathan Stimson
An Electrician