Some people have begun to point out that Ensign Todd wasn’t in certain episodes and it wasn’t him who was killed in whatever the theme was on the day.
Ensign Todd was in none of those episodes and he lives in his own 30 time lines which are all loosely connected to the events in the prime timeline.
Sometimes Todd will appear with rank braids and then without – Ensign Todd is a concept more than a canonical entity that conforms to any strict rules.
I hope that helps 🙂
The original is up for grabs if no one has snapped it up already.