Amada-Beckett-Roman Group

Abra (Sticker Card)
This Abra card is almost identical to the Beckett II Abra card. The only differences being the lack of set and edition symbols, a difference in HP amount, and the fact that this is a sticker card rather then a regular card. Since both the card (the base card, and the 120x damage edit) as well as the artwork used are the same as it's Beckett counterpart, therefore this card has to be part of this group.

Due to the lack of symbols it's currently unknown to say which set it is for sure, but since it's a sticker card it's speculated that this card is part of either the Roman I (Stickers), the Roman II (Stickers) or the Beckett I Stickers (Rocket) set.

Screechal
There exists a bootleg card named Screechal. The Screechal art came from a fandrawing which was featured in the Beckett magazine, but judging by the look of the card it's likely that this card originates from another set which is not in the Amada-Beckett-Roman Group.

Roman IN
There exist cards in the style of the Roman Series, but instead of I or II they've IN as their set symbol. This is noticeable since there is no 'N' in the Roman numeral system. . It's currently unknown if they are their own set or if they're misprints of an existing set.

Gym Series Brick Border
Next to the Beckett Brick Border there apparently also exists a Roman II Brick Border set and a Gym Series Brick Border set. The Beckett set easily fits with the Beckett Series, the Roman II set fits with the Roman Series, but for now it's unknown where the Gym Series would fit the best. There is also an option to make a new series consisting of all the Brick Border cards.