I thought of a Drone opposite called Vessel. Here they are.
(WATER/Machine/Effect/Level 1/ATK 600/DEF 200)
If this card is the only monster you control, it gains these effects.
*Cannot be destroyed by battle.
*During your draw phase, add 1 "Vessel" monster from your deck to your hand instead of conducting your normal draw.
*If you took battle damage from battle involving this card, inflict 600 damage to your opponent.
(WATER/Machine/Effect/Level 4/ATK 1500/DEF 1000)
This card can attack direct directly but when it does so using this effect, the battle damage inflicted to your opponent becomes 1000. Your opponent cannot target "Vessel" monsters you control for attacks or card effects, except this one.
(WATER/Machine/Link/Effect/Link Arrows Left, Bottom, Right/ATK 2400/LINK-3)
2+ "Vessel" monsters
Once per turn: Target 1 "Vessel" monster in your GY; special summon to your zone this card points to. You can tribute 1 "Vessel" monster you control: Target 1 card your opponent controls; destroy that target, and if you do, inflict 800 damage to your opponent.
(WATER/Machine/Link/Effect/Link Arrows Bottom/ATK 800/LINK-1)
1 "Vessel" monster
During your end phase, if this card did not inflict battle damage to your opponent this turn, inflict 800 damage to your opponent. You can only special summon 1 "Battlevessel Chief" per turn.
(WATER/Machine/Link/Effect/Link Arrows Left, Bottom/ATK 1200/LINK-2)
2 "Vessel" monsters, except tokens.
If you control no cards in the main monster zone while this card is in your GY, special summon it.
If a "Vessel" monster you control battles an opponent's monster, it gains ATK equal to the combined ATK of all other "Vessel" monsters you control. You can tribute 1 "Vessel" monster you control: draw 1 card.
Equip only to a "Vessel" monster you control. It gains 500 ATK. Once per turn: Send 1 card from your hand to the GY; inflict 200 damage to your opponent x the combined level or link rating of all monsters on the field, and if you do, you cannot declare an attack with the equipped monster the turn you activate this effect.
Special summon 1 WATER Machine monster from your hand or deck. It cannot attack or activate its effect(s) the turn it is special summoned by this card.
Tribute 1 "Vessel" monster. Both players take 2000 damage.
Target 1 "Vessel" monster you control. While this card is face-up on the field, the targeted monster cannot be destroyed by battle or card effects. Also it cannot be targeted by your opponent's card effects. Once per turn, if the targeted monster is a link monster: You can special summon "Vessel Tokens" (WATER/Machine/Level 1/ATK 0/DEF 0) up to the link rating of the targeted monster, they cannot be used as tributes for an tribute summon or as materials for an special summon of a monster from the extra deck, except "Vessel" monsters.
What you do think, if you have suggestions for TCG/OCG and Anime/Manga existing cards to them, leave a comment for what cards can support the Vessel monsters, I will make more in future discussion.