Shadow Beasts have well balanced Stats, with their only weakness being below average Mana Growth. They're one of the few Shadow Ghost Hybrids that don't need to rely on ShadowForm and a Seduction Type that can actually contribute to frontline combat. As such, you could play around with their Level Types. However they still have ShadowBound and without a means of creating their own shadow, so it's recommended to use them as part of a shadow team.
They have Heightened Sense which gives a bonus to scouting.
- They can be used to make a Batgirl or a Fenrir, both of which would benefit from Shadow Beast's BackStab and DrainShadow skills.