Clem

Clem is a robot/AI who works in Clem's Barbershop. By asking for a hot shave and a towel you can then specify a Realm to travel to and you will be taken there after you sit down in a chair and have a towel placed over your head (the shave is optional). Be aware that Clem is very picky when it comes to specifying what Realm you wish to go to, so be sure you know what it's called or you will not be able to go there until you do. Specifying a year as well seems to help.

In the event of Clem or the Barbershop not working: check the Barber's pole - it may have been turned upside down. Remove it and place it the right way up. If Clem has been killed or the shop taken enough damage to stop it from regenerating, remove the Barber's pole and place it upside down, then remove it and place it the right way again. This seems to do a reset/reboot.