Su, convinced that she will eventually have to confront Tama-chan (whom she wants to eat), has created several mechanical versions of Tama. Each Mecha-Tama has proven to be hazardous to the residents of the Hinata Inn.
Mecha-Tama-Chan 0 (a prototype): Volume 11
Mecha-Tama-chan 1: Volume 5
Mecha-Tama-chan 2: Volume 5
Mecha-Tama-chan Mark 3: Volume 7
Mecha-Tama-chan 4: Volume 8
Mecha-Tamago 5: Volume 13
Mecha-Tama-chan 6: Volume 14
Mecha-Tama-chan 30: Volume 14
It appears that Su has been developing Mecha Tama-chans over the three years following the conclusion of the main story, up until Keitaro and Naru's wedding. The latest version is the 30th model.
Source: Wikipedia.










