Variable bitmaps with u8glib ?

I am wondering if it is possible to display a dynamically changing bitmap with the u8glib or u8g2 libraries?

Basically, I have a device that is transmitting an 80 byte bitmap over 19200 serial. I would like to display the image from the device as it changes. I am unclear how to do this since everything references using PROGMEM which I understand would not work due to speed and memory wear issues.

You can always build your picture pixel by pixel. The source for the pixel might come from anywhere including RAM.