All this time, whatever the mantis ate was either some chitin-covered insects or a lot of meat from the beasts of many types.
There were not many times when the mantis was seen eating greens, which made sense all this time, as since it was an 'Iron mantis', it hadn't eaten anything but flesh and insects.
However, during a certain breakfast on the 2nd day of training, while the mantis was eating some ores on the same table where Theo was eating his breakfast, it was the first time the mantis went and took something from his plate.
Even Theo was surprised, and it was not because of the sudden eating of his food, but because instead of taking the meat pieces, the mantis had taken some of the leafy greens and the other greens.
It was that day Theo first saw it eat vegetarian stuff, which clicked to be abnormal right away.
After that day, Theo started giving the mantis a lot of raw and boiled green vegetables and leaves, which the mantis ate without any nitpicking.