Imaginary Time: Parallel Universes & Mass?

[tmv3v]

At about 7:00 he talked about imaginary time. Does that account for parallel universe? Also is there an imaginary mass as well?

 

[Simon Bridge]

At about 7:00 he talked about imaginary time. Does that account for parallel universe?

No.

Also is there an imaginary mass as well?

That would be a tachyon - nobody has ever found one.

Try not to take these pop-science videos at face value.
Have a read through:
http://www.hawking.org.uk/the-beginning-of-time.html