>>1687Depends on the series, but if they sleep at all, usually its a plain metal slab. The sheets are funny though.
>>1688You'll want 'humanformers' for human Starscream, or 'aftplug' if you want them as robots to have penis and butts. They don't have sex in canon (aside from some innuendos), but broadly speaking, there is:
Sticky-they have penis and vagina/butt, usually called spike/cable, valve, and aft. Most of the time they have all three, but sometimes only the ladies have a valve, which is pretty explicitly a vagina regardless of who has it. I'm not personally a huge fan so I can't give much detail beyond the basics.
Sparksex-they merge their sparks together. This is usually more spiritual and romantic. Sometimes they also are sparkbonded, which is fannish for 'married', and sometimes they have some psychic bond because of this.
Plug and play- they have cables and sockets that they plug into each other. This is sometimes in conjunction with the other types, but sometimes on its own. They typically send electrical signals back and forth.
Tactile- they have erogenous zones, which they touch until they 'overload'. This is also often in conjunction with one of the other types.
There are also random other types, and sometimes you see 'field play', where they have electromagnetic fields, and there is also 'mechpreg', which can be with pretty much any version of sex. But, these are the main kinds.