Battle Drones don't use their own endurance much at all - the only bot that does is the Protectors. So maybe drop a DefBuf from them and add in an EndRdx
Stamina isn't a big need on Bots/FF but I can understand if you want it. Maybe move it to later in your build and pick up Leadership/Medicine earlier as you'll get more use from it (levels 16-20 on your build look boring! Try mixing in active skills every other level when taking passives)
I hope your Force Bubble slotting wasn't meant to be all Rchg and was actually meant to be EndRdx...
Otherwise looks good - I recommend Black Scorpion for a choice of Patron to stack a Defense based shield, the AoE Immob (hold things inside bot burn patches nicely) and the Hold if you like that sort of thing (I know I do!)
[ QUOTE ]
Battle Drones don't use their own endurance much at all - the only bot that does is the Protectors. So maybe drop a DefBuf from them and add in an EndRdx
Stamina isn't a big need on Bots/FF but I can understand if you want it. Maybe move it to later in your build and pick up Leadership/Medicine earlier as you'll get more use from it (levels 16-20 on your build look boring! Try mixing in active skills every other level when taking passives)
I hope your Force Bubble slotting wasn't meant to be all Rchg and was actually meant to be EndRdx...
Otherwise looks good - I recommend Black Scorpion for a choice of Patron to stack a Defense based shield, the AoE Immob (hold things inside bot burn patches nicely) and the Hold if you like that sort of thing (I know I do!)
[/ QUOTE ]
There's one big, BIG hole in that build.
Where in the name of the Holy Zarquon's Singing Fish is Dispersion Bubble? o_O
Oh, and if you go Mace, then for the love of god, skip the Cone Blast. The Shield and the controls are more than useful enough though 
Warning:
The above post may contain Cynicism, sarcasm and/or pessimism. If you object to the quantities contained, then tough.
Thanks for the hints 
@Canine: what do you suggest I drop to take Dispersion Bubble? I may drop stamina in the end, I took it because I get bored when summoning pets and got to wait for end to recharge before fully equip them, but I might use end red slots to work around this...
I have watched a MM with Stamina during an upgrade cycle - they still run out of Endurance. All that Stamina really helps with is long-term uses like multiple toggles.
If all you're taking it for is the upgrade cycle, you'd be better served dropping it and taking some new powers!
If you want to keep it in, then I suggest dropping Aid Self until the high 40's. And only take the shield and AoE immob from your Patron.
Solid build then, although as I said I'd play around with levels you take things.
Yep, stamina helps not in the upgrade cycle, cause you're spamming powers faster than you can recover, I get through one blue every mission before we even get to any foes
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
[ QUOTE ]
I have watched a MM with Stamina during an upgrade cycle - they still run out of Endurance. All that Stamina really helps with is long-term uses like multiple toggles.
If all you're taking it for is the upgrade cycle, you'd be better served dropping it and taking some new powers!
If you want to keep it in, then I suggest dropping Aid Self until the high 40's. And only take the shield and AoE immob from your Patron.
Solid build then, although as I said I'd play around with levels you take things.
[/ QUOTE ]
Thank you Zap, I think I'll drop Stamina then (lol, I spent my last 3 powers to take it, now I to respec it ou). Any suggestions on which powers to take apart from the dispersion bubble already suggested?
Dispersion Bubble and Detention Field would be my choices to go in your build, then shuffle powers down a notch so L41 can be used for your Patron Shield.
And then you're almost a carbon-copy of MZ 
---------------------------------------------
Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder - (http://sherksilver.coldfront.net/index.php)
---------------------------------------------
Name: Master Zaprobo
Level: 50
Archetype: Mastermind
Primary: Robotics
Secondary: Force Field
---------------------------------------------
01) --> Battle Drones==> Acc(1) Acc(3) Acc(3) Dmg(5) Dmg(5) Dmg(7)
01) --> Force Bolt==> Acc(1) Acc(7)
02) --> Pulse Rifle Burst==> Acc(2) Acc(11) EndRdx(17) Dmg(40) Dmg(40) Dmg(43)
04) --> Insulation Shield==> DefBuf(4) DefBuf(9) DefBuf(9)
06) --> Equip Robot==> Rechg(6) EndRdx(11)
08) --> Hover==> Fly(8) Fly(13) Fly(13)
10) --> Deflection Shield==> DefBuf(10) DefBuf(15) DefBuf(15)
12) --> Protector Bots==> Acc(12) EndRdx(19) DefBuf(19) Dmg(21) Dmg(21) Dmg(23)
14) --> Fly==> EndRdx(14) Fly(17) Fly(42)
16) --> Assault==> EndRdx(16) EndRdx(46)
18) --> Aid Other==> Heal(18) Heal(23) Heal(25) Rechg(25) Rechg(27) Rechg(27)
20) --> Dispersion Bubble==> EndRdx(20) EndRdx(29)
22) --> Tactics==> EndRdx(22) EndRdx(29) TH_Buf(31) TH_Buf(31) TH_Buf(43)
24) --> Group Fly==> EndRdx(24) EndRdx(31)
26) --> Assault Bot==> Acc(26) Acc(33) Dmg(33) Dmg(33) Dmg(34)
28) --> Repair==> Rechg(28) Rechg(34) Rechg(34)
30) --> Personal Force Field==> DefBuf(30) DefBuf(36) DefBuf(36) Rechg(36) Rechg(37) Rechg(37)
32) --> Upgrade Robot==> Rechg(32) EndRdx(37) EndRdx(39)
35) --> Detention Field==> Acc(35) Acc(39)
38) --> Force Bubble==> EndRdx(38) EndRdx(39) EndRdx(40)
41) --> Scorpion Shield==> EndRdx(41) DefBuf(42) DefBuf(42) DefBuf(43)
44) --> Aid Self==> Rechg(44) Rechg(45) Heal(45) Heal(45) Heal(46) IntRdx(46)
47) --> Web Envelope==> Acc(47) Acc(48) Rechg(48) Rechg(48)
49) --> Web Cocoon==> Acc(49) Acc(50) Rechg(50) Rechg(50)
---------------------------------------------
01) --> Sprint==> Run(1)
01) --> Brawl==> Acc(1)
01) --> Supremacy==> Empty(1)
02) --> Rest==> Rechg(2)
---------------------------------------------
Thanks for the feedback man 
Hi,
here is the build for my MM (currently level 21).
It only goes as far as level 43 since I couldn't find the patron powers on the planner, however is more than enough to keep me busy for months
---------------------------------------------
Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder - (http://sherksilver.coldfront.net/index.php)
---------------------------------------------
Name: Dr. Mechanix
Level: 43
Archetype: Mastermind
Primary: Robotics
Secondary: Force Field
---------------------------------------------
01) --> Battle Drones==> Dmg(1) Acc(3) Dmg(3) Acc(11) Dmg(19) EndRdx(19)
01) --> Force Bolt==> Dmg(1) Acc(5) Dmg(7) Acc(37) KB_Dist(40)
02) --> Pulse Rifle Burst==> Range(2) Acc(11) Dmg(37) Dmg(37) Range(43)
04) --> Deflection Shield==> DefBuf(4) DefBuf(5) DefBuf(15)
06) --> Equip Robot==> Rechg(6) EndRdx(7)
08) --> Insulation Shield==> DefBuf(8) DefBuf(9) DefBuf(9)
10) --> Hover==> Fly(10) DefBuf(13)
12) --> Protector Bots==> Dmg(12) Acc(13) DefBuf(17) Dmg(17) DefBuf(23) Acc(40)
14) --> Fly==> Fly(14) Fly(15)
16) --> Swift==> Fly(16)
18) --> Health==> Heal(18)
20) --> Stamina==> EndMod(20) EndMod(21) EndMod(21)
22) --> Personal Force Field==> DefBuf(22) DefBuf(23) DefBuf(33)
24) --> Repair==> EndMod(24) Rechg(25) EndMod(25) Rechg(33) Rechg(36) EndMod(36)
26) --> Assault Bot==> Dmg(26) Dmg(27) Acc(27) Acc(31) Dmg(31)
28) --> Aid Other==> Heal(28) Heal(29) Rechg(29) Rechg(34) Heal(43)
30) --> Aid Self==> Heal(30) Rechg(31) Heal(34) Rechg(34) Heal(39) Rechg(43)
32) --> Upgrade Robot==> Rechg(32) EndRdx(33)
35) --> Assault==> EndRdx(35) EndRdx(36) EndRdx(39)
38) --> Force Bubble==> Rechg(38) Rechg(39) Rechg(40)
41) --> Tactics==> TH_Buf(41) EndRdx(42) TH_Buf(42) EndRdx(42)
---------------------------------------------
01) --> Sprint==> Run(1)
01) --> Brawl==> Dmg(1)
01) --> Supremacy==> Empty(1)
02) --> Rest==> Rechg(2)
---------------------------------------------
Can you please give me some hints or comments?
Thanks!