Built and programmed by Yuusaku, Roboppi is very loyal and respectful to him. Yuusaku cares and visibly has a fondness for his house-cleaning robot, as he smiles warmly and pets Roboppi affectionately as in his flashbacks. However, Roboppi does describe Yuusaku as being "a little cold-hearted".
In Season 3, he is the secondary antagonist after becoming an android working alongside Ai.
Roboppi uses an "Appliancer" Deck. His Main Deck monsters focus on swarming and toolboxing and often revolve around monsters of the same name. His core strategy is to Link Summon as many "Appliancer" Link Monsters as possible, an easy feat since most of his Link Monsters are of low Rating.
His Link Monsters despite being weak on ATK value, gain powerful effects depending on whether they are co-linked or not. Due to their low Link Rating, Roboppy is able to co-link many of them easily. He also uses cards able to change their field placements so that they are no longer co-linked, according to his needs. Roboppi also runs multiple cards that can Special Summon his "Appliancer" Link Monsters during the Battle Phase, both to increase the number of attacks he can make and reuse their effects.