Little Jedi’s what is on board?

Jedi is already plural...

Little Jedi is on board.

OK? That's the possessive form. Or maybe a contraction for "Jedi is."

I read it as "Little Jedi is on board".

And there's nothing wrong with that sentence. I mean, apart from having children. Last thing this world needs is MORE humans....

Maybe we should flood the zone with nerdlings tho

HERE COMES AN S

Every time someone uses an apostrophe to make a word plural, a kitten dies. Please donate the price of a cup of coffee and save a kitten.

Maybe there's just 1 and it's a contraction:

Little [jedi is] on board

Last thing this world needs is MORE humans....

Jedi is already plural…

It's a mass or uncountable noun; like happy or e-mail. People who write 'jedis' are as embarrassing as people who write 'emails'.

Padawans?

Emails is correct usage in many instances

There's only one little jedi, and it's on board.

Misanthropy is for losers

if I ever have kids, I'd want my car to have a sticker that says "Little sith lords on board"

Little Jedi was on board. RIP.

Is the singular also Jedi, or is there a lesser known Jedo, Jedus or Jedum knocking around that we should be using?

It's one of those wonderful words which is both singular and plural at the same time:)

Ah well, it's a shame, I was looking forward to pedantically correcting people with "Actually, Jedi is plural - so technically speaking, Luke Skywalker is a Jedus".

Is email / emails like fish / fishes or grass / grasses?

The spaces around the slashes prompted me to read your comment like surreal poetry:

is email

emails like fish

fishes or grass

grasses?

I don't think so, i think OP os totally wrong, the word "emails" is valid in all cases of multiple emails.

There is also concern about the missing hyphen. You wouldn't want to confuse e-mail with email.

Let's start with the billionaire.

Jedi is the Lego of space opera. Although, I am lead to believe that Lego becomes Logolas when you introduce Hobbits.