It is very amazing how a new technology is utilized to produce these so called hearts of superheroes. However, the representation is quite limited, with only five hearts of supposed to be popular characters featured.
Also, the heart of the Minion and the Terminator is not quite compatible with that of Superman, Batman and Ironman. But what should people take from this is that there are already technologies that can be used to create these works of art. Although the work is not that easy at all, it is interesting to know that someone actually exerted effort to work hard in making these superhero hearts up for grabs.