Why didn't Goku...

[Fantastische Hure]

go to Arale when Cell (especially, since he didn't think he could win but Gohan could) or Boo or Piccolo threatened the earth?

WHY?!?!?!

 

[Yoshi]

He forgot Arale even existed.

 

[SIAD]

Arale would have been able to finish off any threat before Mutated Zamasu showed up. Perhaps that super attack that Merged Zamasu launched could have seriously hurt Arale.

I think the explanation to your question is that Arale is a "borrowed" character on some occasions to appear in DB, but in general, she is not part of DB.

 

[Warmmedown]

Can't sense her PL.

 

[ahill]

Cuz he has an unbelievable attraction towards her

 

[Warmmedown]

He was looking for her the day before the Cell Games but he got really hard watching Luffy punch the celestial dragon and had to go home and fix it.

 

[Fantastische Hure]

Cuz he has an unbelievable attraction towards her

:withheld:withheld:withheld

 

[ahill]

:withheld:withheld:withheld

She'd have grown up too duh

 

[Fantastische Hure]

Did you never read or watch Dr. Slump? She's a robot build by that doctor. I don't think she can grow-up lol.

 

[ahill]

Did you never read or watch Dr. Slump? She's a robot build by that doctor. I don't think she can grow-up lol.

Did Goku know that?

 

[Hector]

A better question is: Where was Arale when the Androids were ravaging the world in Trunks's timeline?