There were only 15 episodes of The All New Super Friends Hour, and this is the finale.
1. "The Protector": Batman, Robin, & Aquaman vs. a pirate named Capt. Shark.
2. Wonder Twins in "Stowaways".
3. "The Ghost". The SF deal with Hawkman's enemy, the Gentleman Ghost, who has a made-for-this-show grudge with Superman & Wonder Woman.
4. "Rampage", starring Green Lantern & Superman.
Why Hawkman wasn't used here, I don't know.