Mech-Titans

[Zear Zen]

(If anyone has ideas on how to get my pictures I drew to be compatible with the card maker please PM me.)
In the future, Zen continues his search for the Ninjora Dragons. (The Ninjoras are cards I made on my old account, and Zen is the fictional character that uses them. He's traveling through time in search of the Ninjora Dragons, a bunch of Synchros which can free his Ninja Clan from the void.) However, the officials see his katana and consider him a threat. Now, the officials unleash their titanic robots against him. (Note: I'm going to start a fan fiction soon so I'm just putting the explanation for their existence here until I make it.)

[spoiler=Mech-Titans]Mech-Titans are the monsters that protect Mech-City. They are programed to defended, and not attack any innocent by-standers.
Mech-Titan XXVII - Goliath:
(Level 10/EARTH/Machine/ATK 2500/DEF 2000)
This card cannot be Normal Summoned or Set. This card can only be Special Summoned by the effect of a "Mech-Titan" monster or a "Mech-City" card. This card cannot be selected as an attack-target by a monster who doesn't have a "Threat Counter" on it, nor can it attack a monster or your opponent if it does not have a "Threat Counter" on it. While this card is on the field, all monsters can't change their battle position.
Mech-Titan XXXIV - Guardian:
(Level 4/EARTH/Machine/ATK 0/DEF 3000)
When you take damage by an effect, you can negate the effect, and Special Summon this field in face-up attack position from your hand. This card cannot be Set or switched to defense position. This card cannot be destroyed by battle. (Damage is applied normally.) When you take damage, you can decrease this card's DEF by any number to decrease the damage by the amount decreased.[/spoiler]

[spoiler=Mech-City]Mech-City cards are fields spells that are locations in Mech-City. Each have different security measures and those tell how and when they'll call the Mech-Titans
Mech-City Town Square:
(Field Spell)
When your opponent declares a direct attack, Special Summon 1 "Mech-Titan" monster and place 1 "Threat Counter" on the attacking monster. When your opponent declares a monster as an attack-target, negate the attack and place 1 "Threat Counter" on it.
Mech-City Lab:
(Field Spell)
When your opponent Summons a monster, place 1 "Threat Counter" on the attacking monster. When your opponent declares a direct attack, negate the attack and place 1 "Threat Counter" on it.[/spoiler]