Direct answer
Use Goberto where his current in-game profile fits the quest, maintain his armor, and do not plan around a romance route: a developer reply says he was not included in the romance plans.
Role at the Round Table
Goberto can contribute as a Knight, but exact strengths, traits, and best assignments should come from the current Glossary and the quest card in front of you rather than a static universal ranking.
Armor and patch history
Patch 1.0.10 fixed connected cases where Goberto or Childeric could have damaged armor reset incorrectly on a following cycle. If armor behavior differs from an older guide, confirm the installed version first.
Romance status
A developer reply says Goberto was not planned as a romance option. Treat his warm scenes as friendship and character development when planning a run.
Frequently asked questions
Can you romance Goberto?
A developer reply states that Goberto was not in the planned romance options.
Why did Goberto's armor change between cycles?
Patch 1.0.10 fixed an issue where his damaged armor state could reset incorrectly. Update the game before comparing results.