If you are only picking a few Endless Waltz development units to invest in, start with Deathscythe Hell Endless Waltz for SSP, then Wing Gundam Zero Custom and Tallgeese III for SP. Wing Gundam Proto Zero is the SR honorable mention if you want an SSP target outside the SSR list.
The Unit Details screen shows Deathscythe Hell with the Weapons & Skills tab open, including Beam Scissor. — Fortexfiend
Which Endless Waltz development SSRs are worth investment
The Endless Waltz development SSRs and the SR mentioned here are all considered strong options compared to other free development units. The critical question is not whether each unit is usable, but what order to prioritize them for SP and SSP coins. These recommendations apply strictly to units from the Endless Waltz development tree, not gacha SSRs, and are based on how each unit improves with conversion rather than rarity or general popularity.
SP priority: Deathscythe Hell Endless Waltz
Deathscythe Hell Endless Waltz stands out for SP conversion because its beam scissor weapon lowers the enemy's defense with each attack. The unit favors close combat and counterattacking, and increased stats from SP conversion help it excel in this role. The upgraded stats make its unique attacks stronger and improve its survivability, securing its place as the first SP candidate if you want a hard-hitting SSR attacker.
Choose Deathscythe Hell for SP if you want a powerful attacker
Deathscythe Hell is the first SP priority in this line due to its defense-lowering main attack and stats that boost its counterattacking effectiveness.
SP priority: Tallgeese III
Tallgeese III serves as the defender option to prioritize for SP coins. Its stats are already strong for HP, defense, and mobility. Out of the box, it offers an AOE mega cannon that reduces enemy beam weapon power and a heat rod that inflicts attack down. Investing SP into Tallgeese III boosts its survivability, making it better at support defense and more reliably staying alive to help your team.
Tallgeese III’s unit details screen shows its stats and weapon list, including Mega Cannon. — Fortexfiend
Choose Tallgeese III for SP if you want a strong defender
Tallgeese III is a top SP investment for its tank stats and defender abilities, gaining further survivability and mobility.
SP priority: Wing Gundam Zero Custom
Wing Gundam Zero Custom is not the first SP pick, but it is still a strong contender. The unit is versatile and effective even before spending coins, and extra stats from SP conversion make it beefier and improve its flexibility rather than patching a weak kit. This makes it valuable for accounts needing a broadly useful SSR.
Choose Wing Gundam Zero Custom for SP if you want flexibility
Wing Gundam Zero Custom remains a versatile and strong SSR, making it a personal SP priority for overall utility.
SSP priority: Deathscythe Hell Endless Waltz
Deathscythe Hell Endless Waltz becomes the top SSP candidate because SSP conversion gives it a map attack with very strong coverage. While its other upgraded attack keeps the style of increased damage at low HP, the map attack is the main draw and sets this unit apart for endless content. The preference is clear if you want to maximize impact with SSP coins.
Choose Deathscythe Hell for SSP if you want unparalleled map coverage
Deathscythe Hell is the SSP priority for its powerful map attack and coverage, bringing unique strength to team clears.
SSP priority: Wing Gundam Zero Custom
Wing Gundam Zero Custom is a standout SSP pick thanks to significant upgrades: more stats, improved mobility, and a new five-range skill. Its beam weapon range can grow further when vigor is high enough, making it a very flexible ranged unit. The speaker rates this as the best overall SSP pick for accounts needing adaptability and solid performance.
The Unit Details screen shows Wing Gundam on the Weapons & Skills tab with its weapons listed. — Fortexfiend
Choose Wing Gundam Zero Custom for SSP if you want flexible range and stats
Wing Gundam Zero Custom is the best overall SSP candidate due to its flexible skill upgrades and increased range potential.
Heavyarms Custom and Sandrock Custom
Heavyarms Custom is described as solid, but less impressive than the other SSRs. It wants SSP coins primarily for its support play at full range, since SSP gives its weapon maximum range and power for supporting attacks. Sandrock Custom is an attacker with crit-focused melee power. Its moving map attack and closer-range damage boost with SSP surprised the speaker, making it notable but still less urgent than Deathscythe Hell or Wing Gundam Zero Custom.
| Unit | Role | Most valuable with | Standout features |
|---|---|---|---|
| Heavyarms Custom | Support | SSP | Map attack, support range |
| Sandrock Custom | Attacker | SSP | Moving map attack, crit melee power |
comparison
Heavyarms Custom Primarily benefits from SSP for effective map and support range attacks. It is solid but receives less attention and is less urgent to convert first.
Sandrock Custom Surprised as an attacker, it becomes a crit-focused melee threat after SSP conversion with moving map attack and improved close-range damage.
Wing Gundam Proto Zero
Wing Gundam Proto Zero is the SR honorable mention for SSP. It gets a map attack at SSP, an improved twin Buster Rifle, and the SSP version scales better with higher HP. This unit is suggested as the best SR spot for SSP coins if you want an option outside the SSRs.
Wing Gundam Proto Zero is shown on the Weapons & Skills tab with Twin Buster Rifle and Twin Buster Rifle SSP visible. — Fortexfiend
Also worth knowing
- No additional insights were provided for this guide.
FAQ
Which Endless Waltz development SSR should I SP convert first?
Deathscythe Hell Endless Waltz is the preferred first SP conversion for its defense-lowering attack and strong close combat role.
Which unit should I use SSP coins on in the Endless Waltz development tree?
Deathscythe Hell Endless Waltz is the speaker’s top SSP pick, with Wing Gundam Zero Custom as another strong candidate.
Is Deathscythe Hell Endless Waltz better for SP or SSP?
It is valuable for both, but SSP is preferred due to its exceptional map attack coverage.
Is Tallgeese III worth spending SP coins on?
Yes, Tallgeese III is recommended for SP conversion to boost defender stats and survivability.
Which Endless Waltz unit gets the best SSP upgrade?
Deathscythe Hell Endless Waltz receives the most impactful SSP upgrade because of its wide map attack coverage.
Is Wing Gundam Proto Zero a good honorable mention for SSP?
Yes, Wing Gundam Proto Zero is a strong SR honorable mention for SSP if you want to invest in a unit outside the SSR list.
Sources
Screenshots on this page are frames from the videos below, used to illustrate the steps they describe. All rights remain with their creators.
- WHICH ENDLESS WALTZ DEV SSR TO SP & SSP SD Gundam G Generation Eternal — Fortexfiend, April 3, 2026