Sorry for your loss
But there is always another!
When I lost Juggernaut my large full grown peacock I was devastated and whilst I had a gut feeling about it before actual confirmation it never did help spent my time for the next few hours watching all the videos I made with the lil' beasty.
But during this time of remembering I resolved to name the very next and ALL future O.scyllarus/Peacocks as "Juggernaut" sort of like a phoenix bird, even in death they only "reincarnate/are born again" through another individual of the same species.
Same goes for Leviathan my old giant spearer who never died but moved into an aquarium shop and is now the stores display animal!
The next 2-3 mantis shrimp I am getting (at the same time) will be those species above and thus carry the names of Juggernaut & Leviathan (I am not yet decided on what to call the female, perhaps behemoth and thus all female giant zebra spearers would be called as such for the future).
Again sorry for your loss. I usually make videos of the individual lost (from the videos I had previously made) into a sort of compilation video that can float across the internet until the end of internet itself!