If the sixth boss, whether Shark-Mouth or Monster-Head, was successfully destroyed, the seventh stage takes place in Uranus's orbit. However, two alternate stages are possible if the sixth boss escaped, depending on that boss's identity. If Shark-Mouth escaped, Stage 7 is Pluto's orbit, with Monster-Mouth as the boss. If Monster-Head escaped, Stage 7 is Neptune's orbit, with Ultimate-Tiger as the boss.
Enemies
Uranus foes
Tsubame (つばめ)
Mini Tank (ミニタンク)- File:DR Air Gun.gif Air Gun (空中砲)
Aburazemi (アブラゼミ)
CD- File:DR Daiyaru.gif Dial (ダイヤル)
- File:DR Rotary Gun.gif Rotary Gun (回転砲)
Pluto foes
Penchi (ペンチ)- File:DR Saw Machine.gif Saw Machine (鋸マシーン)
- File:DR Looper.gif Disaster Looper (尺取虫 （破壊不能))
Buffalo (バッファロー)- File:DR Binoculars.gif Binoculars (双眼鏡)
- File:DR Rising Cannon.gif Rising Cannon (上下大砲)
- File:DR Bagworm.gif Bagworm (みの虫)
Red Gaeru (赤ガエル)- File:DR Orange Storage.gif Orange Storage (倉庫・オレンジ)
Neptune foes
- File:DR Cicada.gif Cicada (せみ)
- File:DR Medusa Egg.gif Medusa Egg (大くらげのたまごっち)
- File:DR Medusa.gif Medusa (大くらげ)
- File:DR Amercian Crawfish America Zarigani (アメリカザリガニ)
- File:DR Daiyaru.gif Dial (ダイヤル)
- File:DR Green Storage Storage (Green) (倉庫・緑)
- File:DR Channel Channel (チャンネル)
- File:DR Guhu Guhu (グフ)
- File:DR Enormous Disaster Serpent Enormous Disaster Serpent (巨大ヘビ (破壊不能))
Boss
Uranus: Twin-Claw (ツインクロー)
An enormous twin-clawed creature who fires death rays from the centre of his body and boomerang maggots from his claws. The maggots can be destroyed.
Pluto: Monster-Mouth (モンスターマウス)
A fusion of Shark-Mouth and Twin-Claw. Uses Twin-Claw's tail beams and all of Shark-Mouth's attacks.
Neptune: Ultimate-Tiger (ウルティメイトタイガー)
A fusion of Monster-Head and Twin-Claw--in other words, a fusion of all three of Multi-Squid, Shark-Mouth, and Twin-Claw. Attacks like Monster-Mouth, but replaces the bubbles with Multi-Squid's centipedes. The same problem potential with Multi-Squid and Monster-Head applies.