If you summon Elemental Hero Bubbleman can draw two cards when have no on the field but a few in your hand?

You are correct! Here's why:

Elemental Hero Bubbleman's effect:

* "When this card is Normal Summoned, if you have no monsters on the field, you can draw 2 cards."

Conditions:

* Normal Summoned: This means Bubbleman must be summoned normally (not special summoned).

* No monsters on the field: This means you must have no monsters face-up on your field, regardless of whether you have monsters in your hand.

Therefore, if you have no monsters on your field but some in your hand, you can still draw 2 cards when you Normal Summon Elemental Hero Bubbleman.