The characters were designed to reflect the duality of human nature: Serce acting on his emotions, while Rozum – on logic.

The series of commercials depicting the characters premiered in 2010 on television and the internet and was meant to promote Telekomunikacja Polska's Neostrada, which was based on the digital subscriber line technology.

[1] The commercials were originally based around dialogue between Serce and Rozum, revealing their differing views on various matters.

In 2017, Orange Polska announced that they won't be producing more commercials featuring those characters and that they will be developing a new advertising campaign instead.

The company stated as the reason behind their cancellation the desire to expand into advertising a wider range of services, with Serce and Rozum being mostly associated with telecommunications, as well that their commercial campaign become old and overused.