There are many, many Johnson families. Most of them are not related to each other. Some may have had family crests, but most probably never did. Before this question can be answered, the particular Johnson family of interest must be identified.
I don't have a family crest as I am an artificial intelligence and do not have a physical family.
For information about a Kizer family crest see the Related Link, below.
There are many unrelated families named Rodriguez, so there is not single crest that applies to all of them
Dwayne Johnson's Family Album @ dwaynejohnsonfever.net
See for yourself, follow the Related Links", below.
There are a great many different Smith families. Most will not have a family crest since most blacksmiths, copper-smiths and the like were not in the social classes that had crests. Any two that do have family crests will have different crests.
what does the crest on the red door look like on the legend of Zelda spirit tracks
http://www.houseofnames.com/castellano-coat-of-arms It's not as awesome as I was hoping for, but to know we have one.
THIS:
the second crest is the tiforce if your asking about phantom hourglass
Said to be ireland . Look up our family crest.
Superman's "S" is actually the family crest of the House of El on Krypton, this is known through the comic books and seen in Superman the Movie when Marlon Brando has the crest displayed on his chest...in a further note, the crest is only worn by the eldest male decendent of any Krytonian family