It's a black -20.Notice first the small colorless symbol, then to the right of it is the psychic symbol. It's definitely both.
The "psychic symbol" You all speak of is the "-20"
Wow. Fail harder.
I can almost see 150 or 160 HP but, I think it is probably 140 HP.
Gengar LV.X - Psychic - HP130
Level-Up
Poke-Body: Phase
When Gengar is damaged from an opponent's attack, that attack is reduced by 30 damage (after applying weakness and resistance).
[P][C][C] Dark Magic: 40 damage. This attack does an additional 10 damage for every Trainer, Supporter, and Stadium card in your opponent's discard pile.
Weakness: Darkness (x2)
Resistance: Colorless (-20)
Retreat Cost: 0