Same Tank / Defense kit — farm Hydroid now, or invest Forma into Hydroid Prime when relics and slots allow.
Pick Hydroid if…
Pick Hydroid Prime if…
Hydroid Prime is the same kit as Hydroid with better long-term polarities / stats. Farm Hydroid when you need the fantasy now; move Forma to Hydroid Prime once relics and slots allow.
Hydroid
Hydroid Prime
Hydroid
Match the priority to your main ability — Strength or Duration first for most kits, then Efficiency, then Range.
Hydroid Prime
Match the priority to your main ability — Strength or Duration first for most kits, then Efficiency, then Range.

