The gang’s all here
Genbu no Shoukanshi (Black Tortoise Summoner)
Water Spellcaster / Flip / Effect
(1) If this card is flipped face-up: Target 1 monster your opponent controls; destroy that monster.
Seiryuu no Shoukanshi (Blue Dragon Summoner)
Wind Spellcaster / Effect
(1) If this card is sent from the field to the Graveyard: You can add from your Deck to your hand 1 Dragon-Type/Warrior-type/Spellcaster-Type Normal Monster.
Ouryuu no Shoukanshi (Yellow Dragon Summoner)
Light Spellcaster / Effect
You can only use the effect of “Yellow Dragon Summoner” once per turn. (1) You can Tribute 1 monster, then target 1 monster on the field; return that monster to the hand.
As you can see, Flip is a subcategory of monsters, much like Tuner or Gemini now.
Odd-Eyes Dragon is a Level 7 monster.