Kekel is referend as a "rival" (he-rival), not a "rivalka" (she-rival), here (<a rel="nofollow" class="external free" href="https://musicserver.cz/clanek/58314/projekt-dva-se-opet-nori-do-pocitacovych-her-tentokrat-s-chuchlem/">https://musicserver.cz/clanek/58314/projekt-dva-se-opet-nori-do-pocitacovych-her-tentokrat-s-chuchlem/</a>). Kekel is also inflected here according to the pattern "pán" (a masculine animate noun pattern for inflection). The Czech language is hard, but Kekel is reffered as "he" in the all Czech descriptions of the game or Kekel himself. That Chuchel Wiki is wrong and not even made by Czechs.