If I have Fezandipiti with the "Adrena-Pheromone" Ability as my Active Pokemon and it only has a Legacy Energy attached, can I attack with "Energy Feather" on my turn and also get the protective effect of "Adrena-Pheromone" during my opponent's turn?
Yes, although Legacy Energy only provides one unit of energy, it is providing all energy types all the time.
Source: Twilight Masquerade FAQ; TPCi Rules Team (2024-05-23)

Relevant cards

Note: All applicable cards may not be listed below.
SV6_96
SV6_96
SV6_167
SV6_167