Synergists - muscles working together
Antagonist are the muscles from the opposite movement

Ankle- talocrural joint

Plantar Flexion

          Gastrocnemius
          Soleus
          Tibialis posterior
          Peroneus longus (assists)
          Peroneus brevis (assists)
          Flexor digitorum longus (week)
          Flexor hallucis longus (week)
          Plantaris (week)

Dorsiflexion

          Tibialis anterior
          Extensor digitorum longus
          Extensor hallucis longus