All 8 Pokémon Center locations in Japan will be distributing Gangar (ゲンガー) and Hassam (ハッサム) to players of Pokémon X and Y. The previous Ghost (ゴースト) and Strike (ストライク) 2013 Christmas Exchange was a very popular event according to the official Japanese Pokémon website. From Saturday February 1st, 2014 until February 28th, 2014 players have a chance to get Gangar and Hassam once again at the Pokémon Centers. This time though instead of trading with a Pokémon Center staff member, players can directly get Gangar and Hassam via a local wireless Mystery Gift.

Gangar and Hassam will be distributed at different times of the day. Each Pokémon is rotated hourly each day during the distribution time period. The table below lists the times and which one is being distributed at that time.

Distribution Time Chart

Time	Pokémon
10:00am to 11:00am (10時～11時)	Gangar (ゲンガー)
11:00am to 12:00pm (11時～12時)	Hassam (ハッサム)
12:00pm to 1:00pm (12時～13時)	Gangar (ゲンガー)
1:00pm to 2:00pm (13時～14時)	Hassam (ハッサム)
2:00pm to 3:00pm (14時～15時)	Gangar (ゲンガー)
3:00pm to 4:00pm (15時～16時)	Hassam (ハッサム)
4:00pm to 5:00pm (16時～17時)	Gangar (ゲンガー)
5:00pm to 6:00pm (17時～18時)	Hassam (ハッサム)
6:00pm to 7:00pm (18時～19時)	Gangar (ゲンガー)
7:00pm to 8:00pm (19時～20時)	Hassam (ハッサム)
8:00pm to 9:00pm (20時～21時)	Gangar (ゲンガー)

Gangar is level 25, has the OT (親名) Pokesen (ポケセン), has the Ability Levitate (ふゆう) and knows the following moves: Night Shade (ナイトヘッド), Confuse Ray (あやしいひかり), Sucker Punch (ふいうち) and Shadow Punch (シャドーパンチ).

Hassam is level 25, has the OT (親名) Pokesen (ポケセン), has the Ability Swarm (むしのしらせ) or Technician (テクニシャン) and knows the following moves: Metal Claw (メタルクロー), False Swipe (みねうち), Agility (こうそくいどう) and Fury Cutter (れんぞくぎり).

Players can then get the Mega Stones to Mega evolve both Gangar (ゲンガー) and Hassam (ハッサム) during battles.

Source: http://www.pokemon.co.jp/info/2014/01/140122_p01.html