EXFO-JP050 ドリトル・キメラ Do-Little Chimera
Link Rating 2 FIRE Beast Link Effect Monster
Links: Bottom Left, Bottom Right
2 FIRE monsters
All FIRE monsters on the field gain 500 ATK and DEF, also all WATER monsters on the field lose 400 ATK and DEF. If this card is destroyed by battle or card effect: You can target 1 FIRE monster in your GY; add it to your hand. You can only use this effect of “Do-Little Chimera” once per turn.
Note: As in “Do little” like “Doing almost nothing”
So, they are doing this guessing thing on Twitter that they do from time to time, I wonder what it could be, looks to me like a male version, similar to Missus Radiant, though I don't know if that's the idea. I don't have a good guess to be honest, so I'll just go with Chubby Chimera, because he got chubby.
EDIT: Card revealed, updated post.