Copy ability token

[copy king]

When you copy a card do you get that cards ability

[Maxpayne03]

What if the clone target is opponent's PW? Say  {Nissa, Vastwood Seer}, can the clone flip and be a PW?

[Kaylesh]

{Clone}
{Vesuvan Doppleganger}
{Clever Impersonator}
(examples of cards that can mimic)

NONE of these can flip or transform as they do not have an alternate side (Level 2 Judge ruling)

Full info with extensive examples is also covered in rule 706 of the comprehensive rules (can be found in the main menu of the app. Either scroll the glossary for "copy" and tap, or search 706 in the comprehensive rules)
The base rule:
706.2.: When copying an object, the copy acquires the copiable values of the original object's characteristics and, for an object on the stack, choices made when casting or activating it (mode, targets, the value of X, whether it was kicked, how it will affect multiple targets, and so on). The "copiable values" are the values derived from the text printed on the object (that text being name, mana cost, color indicator, card type, subtype, supertype, rules text, power, toughness, and/or loyalty), as modified by other copy effects, by "as . . . enters the battlefield" and "as . . . is turned face up" abilities that set characteristics, and by abilities that caused the object to be face down. Other effects (including type-changing and text-changing effects), status, and counters are not copied.
Example: Chimeric Staff is an artifact that reads "{X}: Chimeric Staff becomes an X/X artifact creature until end of turn." Clone is a creature that reads, "You may have Clone enter the battlefield as a copy of any creature on the battlefield." After a Staff has become a 5/5 artifact creature, a Clone enters the battlefield as a copy of it. The Clone is an artifact,

not a 5/5 artifact creature. (The copy has the Staff's ability, however, and will become a creature if that ability is activated.)
Example: Clone enters the battlefield as a copy of a face-down Grinning Demon (a creature with morph {2}{B}{B}). The Clone is a colorless 2/2 creature with no name, no types, no abilities, and no mana cost. It will still be face up. Its controller can't pay {2}{B}{B} to turn it face up.

On double faced cards:
706.8.: When copying a double-faced permanent, only the copiable values of the face that's currently up are copied. (See rule 711, "Double-Faced Cards.")

And

701.25a: Only permanents represented by double-faced cards can transform. (See rule 711, "Double- Faced Cards.") If a spell or ability instructs a player to transform any permanent that isn't represented by a double-faced card, nothing happens.

TLDR: L2 judge nailed it, unless the copying creature is represented by a double-faced card.